Informatics Publishing Limited

B. L. Kasinath ¹, A. N. Ganeshamurthy ¹, N. S. Nagegowda ¹

Affiliations
1 ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru - 560 089, IN

Abstract

A field experiment was conducted on magnesium nutrition in tomato hybrid Arka Ananya at ICAR-IIHR, Bengaluru, for two years. Graded application of magnesium produced significant difference in fruit yield in tomato among treatments. The yield increased upto 50kg Mg ha^-1 application, and decreased beyond this dose. Yield parameters like number of fruits per plant and fruit weight recorded results similar as that of yield. Growth parameters like number of branches and plant-height followed a similar trend. Growth and yield parameters were found to be well correlated with yield. Treatment T3 (50kg Mg ha^-1) recorded significantly higher plant height, number of branches, fruit number, fruit weight and fruit yield over the Control, T₁, where no magnesium was applied. Yield increase of 29% can be achieved with magnesium application (50kg Mg ha^-1) in tomato during winter season.

Keywords

Tomato, Growth Parameters, Magnesium, Dry Matter, Fruit Yield.

Full Text

   

G. C. Satisha ¹, Prakash Patil ¹, A. M. Shirol ², A. N. Ganeshamurthy ¹

Affiliations
1 ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560 089, IN
2 K.R.C. College of Horticulture, University of Horticultural Sciences, Arabhavi - 591 310, Karnataka, IN

Abstract

A field experiment was conducted for three consecutive years to study the effect of various combinations of nitrogenous fertilizer (in the form of urea), vermicompost and FYM on yield and soil-available nutrients in sapota. Largest number of fruits (4820 tree^-1) and maximum fruit yield (31 tons ha^-1) were recorded with 10kg vermicompost + 350:50:450g NPK tree^-1, and was on par with application of 40kg FYM + 350:50:450g NPK tree^-1. The net profit and yield trend over the years showed that application of 10kg vermicompost + 350:50:450g NPK tree^-1 was more suitable for meeting nutrient requirement for enhanced yield in sapota. Application of organics (irrespective of source) showed positive, significant effect on organic matter content of the soil after three years. Highest build-up of organic matter in the soil was recorded with 10kg vermicompost alone (T10), which was at par with 40kg FYM alone (T5). Moreover, there was a clear trend of increasing total soil nitrogen content in plots supplied with increased levels of inorganic nitrogen with organic manures, and, this was subsequently reflected in potentially mineralized nitrogen, suggesting an improved labile pool of plant-available nitrogen. Therefore, there is an obvious need to include organic manures along with the inorganic nitrogenous fertilizer for optimizing the use-efficiency of soil and applied N to achieve sustainable yields in sapota for profit.

Keywords

FYM, Vermicompost, Inorganic Fertilizers, Sapota, Potential Mineralized Nitrogen, Plant-Available Nutrients.

Full Text

   

A. N. Ganeshamurthy ¹

Affiliations
1 Division of Soil Science and Agricultural Chemistry, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru – 560089, IN

Abstract

Effects of directly-applied-to-the-soil and residual boron (B) in soil were assessed in French bean (Phaseolus vulgaris L.) - cabbage (Brassica oleracea var. capitata L.) cropping sequence and cycle under Alfisol, with either low or adequate hot-water-soluble boron (HWS-B) content. The experiments focussed on effects of various levels of applied B on leaf tissue B and crop yield, HWS-B content in the year of B application, and in subsequent years. Response of the crops to applied B reflected initial soil B levels. Application of the highest level of B (8kg ha^-1) reduced crop yield at Site-I throughout the four years of experimentation. Applied B up to 2kg ha^-1 enhanced French bean yields at Site I, while at Site II, at all the levels of applied B, yields were reduced in the first two crops; during the third and fourth crop, yields in plots receiving 1kg B ha^-1 were higher than those in plots that did not receive supplemental B. In both French bean and cabbage, high B concentrations caused toxicity symptoms manifested as browning of leaf margin. These symptoms appeared in both French bean and cabbage under all the plots receiving B e" 4kg ha^-1. Monitoring HWS-B content at harvest in each crop during the experiment indicated that applied B diminished rapidly in these soils. However, at Site II, residual HWS-B was above the critical level throughout the period of experimentation. A single application of higher amounts of B fertilizer led to B toxicity and caused yield suppression in these vegetables. French bean, being a sensitive crop, should be grown preferably on residual B rather than subjecting it to direct application of B in any vegetable cropping system under red soils.

Keywords

Alfisols, Cabbage, French Bean, HWS-B, B Toxicity, Tissue B, Residual B, Yield, Cropping Sequence.

Full Text

   

Y. T. N. Reddy ¹, Reju M. Kurian ¹, A. N. Ganeshamurthy ², P. Pannerselvam ², S. R. Shivu Prasad ¹

Affiliations
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Division of Soil Science and Agricultural Chemistry, Indian Institute of Horticultural Research, IN

Abstract

A field trial on organic practices in papaya cv. Surya was conducted during 2009-2011 with 10 nutrient combinations involving farm yard manure, biofertilizers and VAM along with 100% recommended dose of fertilizers and no manure/ fertilizer treatment. Vegetative parameters were recorded periodically. At 18 months after planting, plant height, plant girth and number of leaves were found to be significant. Results indicated that, crop growth was better with organic treatments compared to no manure/fertilizer treatment. Fruit yield and quality parameters were also recorded. Fruit yield and average fruit weight were found to be significant. Maximum fruit yield of 32kg/plant (80 t/ ha) was recorded under 75% recommended dose of fertilizer applied as farm yard manure+vermicompost, which was significantly superior to that in 100% recommended dose of fertilizer for the 18-month cropping period.

Keywords

Papaya, Organic Practices, Fruit Yield.

Full Text

   

L. R. Varalakshmi ¹, A. N. Ganeshamurthy ¹

Affiliations
1 Division of Soil Science and Agricultural Chemistry, Indian Institute of Horticultural Research, Hessaraghatta Bangalore- 560 089, IN

Abstract

A study was conducted in peri-urban Bangaluru (where city wastewater from four water bodies, viz., Bellandur, Varthur, Byramangala and Nagavara tanks, is being used for cultivation of vegetable crops) to assess heavy metal contamination in water, soil and vegetable samples. Analyses revealed that concentration of cadmium (Cd) and chromium (Cr) in waters from all the tanks exceeded recommended levels of 0.01 and 0.1 mg/l, respectively, while content of lead (Pb) and nickel (Ni) are within safe limits. Concentration of Cd was highest in the water of Bellandur tank (0.039 mg/ l) and of Cr was highest in the water of Byramangala tank (0.311 mg/l). Bellandur and Varthur tanks were found highly contaminated with Cd, Pb and Ni. Mean concentration of heavy metals in soils receiving sewage water from the four tanks ranged from 1.92 to 2.9 mg/kg for Cd, 47.04 to 68.12 mg/kg for Pb, 35.08 to 92.78 mg/kg for Cr and 48.2 to 57.3 mg/kg for Ni. Cd and Pb content were highest in soils around Varthur and Bellandur tanks, while, mean concentration of Cr was highest in soils around Byramangala tank. Similar trends were observed for heavy metal content in vegetables. Among the vegetables studied, leafy vegetables accumulated higher concentration of heavy metals, followed by ischolar_main vegetables. Cd concentration in all the vegetables grown around Varthur and Bellandur tanks exceeded the safe limit prescribed under Prevention of Food Adulteration Act (PFA 1954). Pb and Ni concentration exceeded safe limits in all the vegetables in all the tank areas studied.

Keywords

Heavy Metals, Peri-Urban, Water Bodies, Soils, Vegetables.

Full Text

   

Y. T. N. Reddy ¹, S. R. Shivu Prasad ¹, Reju M. Kurian ¹, A. N. Ganeshamurthy ², P. Pannerselvam ²

Affiliations
1 Division of Fruit Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Division of Soil Science and Agricultural Chemistry, IIHR, Bangalore-560 089, IN

Abstract

A field experiment was conducted during 2009-10 at Indian Institute of Horticultural Research, Bangalore using papaya cv. 'Surya'. Ten organic nutrient treatments along with recommended dose of fertilizers and control (no manure/fertilizer) were used totaling twelve treatment combinations of FYM, biofertilizers and vermicompost. Fruit quality parameters such as total carotenoids, lycopene, TSS, average fruit weight and ascorbic acid content were analyzed. Among the treatments, application of 50% recommended dose of fertilizers in the form of farm yard manure (FYM) applied as Azospirillum+Phosphate solubilizing bacteria+Mycorrhiza+Vermicompost showed high level of carotenoids, lycopene and low levels of ascorbic acid. TSS and average fruit weight were not affected by various organic nutrient treatments.

Keywords

Papaya, Organic, Cv. Surya, Quality Parameters, FYM, Biofertilizers, Vermicompost.

Full Text

   

Y. T. N. Reddy ¹, Reju M. Kurian ¹, A. N. Ganeshamurthy ², P. Pannerselvam ²

Affiliations
1 Division of Fruit crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Division of Soil Science and Agricultural Chemistry, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN

Abstract

A field experiment was conducted during 2005-07 at Indian Institute of Horticultural Research, Bangalore, on papaya cv. Surya with six organic treatments along with recommended dose of fertilizers and no manure/fertilizer application. Results indicated that crop growth and fruit yield were higher in inorganic fertilizer treatment (55 t ha1) compared to organic treatments (26.9 to 38 t ha-1). There was no significant variation in average fruit weight and TSS, but shelf life of the fruit was significantly higher in organic treatments (6.2 to 7.9 days) as compared to inorganic fertilizer treatment (5.1days). Among the treatments, application of 7 kg urban compost plant-1 or 10 kg FYM plant-1 was found to be ideal for improving soil health in terms of microbial population, and biochemical reaction compared to other treatments.

Keywords

Papaya, Organic Practices, Fruit Yield, Quality, Shelf Life.

Full Text

   

A. N. Ganeshamurthy ¹, L. R. Varalakshmi ¹, H. P. Sumangala ²

Affiliations
1 Division of Soil Science and Agricultural Chemistry, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN
2 Division of Ornamental Crops, Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Bangalore-560 089, IN

Abstract

The India's population living in cities and urban areas has doubled to 27.8% since Independence. Our cities face enormous challenges of environmental pollution and health related problems. City authorities have often been reluctant to accept urban and periurban agriculture because of perceived health risks. Nevertheless, in most cities the world over, periurban agriculture is practiced on a substantial scale, despite prohibitive laws and regulations. Non-degradable pollutants added to the system through anthropogenic activities like heavy metals in air, soil, water and crops bother us more than others as these tend to bio-accumulate. Throughout history, heavy metal contamination has long plagued mankind - undermining intelligence and causing debasing behaviour. Toxicity of some of the heavy metals even leads to deficiency of essential metals like Zn, Cu, etc. in both human and animals. Climate, nutritional status, genetic predisposition, type of work and exposure level influence the intensity of impact on health. Permissible levels prescribed by different organizations differ because of differences in tolerance levels of people of different origins and differences in threat perception of the people. With our current level of knowledge a permanent and foolproof method to stop entry of heavy metals into the food chain is impossible. However, methods are available to reduce intensity of the effects. Alternative land use with crops not directly consumed by human beings and animals offers a better remedy to contain heavy metal entry into food chain. India has a wide ranging set of environmental laws that lay down norms for air, water, soil, wastes, etc. Legislative frame work has been developed in the belief that a policing model is sufficient. It does not go beyond that. Regulatory mechanisms may not be effective in isolated cases but are essential drivers to augment other approaches, by putting a "cap" on the level of degradation that is socially acceptable, as well as creating space for other, cleaner and more acceptable alternatives to be "viable".

Keywords

Environmental Risk, Heavy Metal Contamination, Periurban Agriculture.

Full Text

   

L. R. Varalakshmi ¹, A. N. Ganeshamurthy ¹

Affiliations
1 Division of Soil Science and Agricultural Chemistry, Indian Institute of Horticultural Research, Hessaragtatta Lake Post, Bangalore - 560 089, IN

Abstract

Vegetable samples from one of the main whole sale markets of Bangalore city were collected over two years and analysed for heavy metals such as Cd, Pb, Cr and Ni. Heavy metal content of vegetables ranged from 0.24 to 2.54 mg Cd kg^-1, 2.16 to 10.40 mg Pb kg^-1, 3.08 to 16.2 mg Cr kg^-1 and 1.66 to 11.52 mg Ni kg^-1. Leafy vegetables accumulated higher concentration of heavy metals followed by ischolar_main vegetables. Fruit vegetables accumulated the lowest content of heavy metals. But the heavy metal content of all the vegetables crossed the safe limits permitted for human consumption to a far greater extent except that Cd content of ischolar_main and fruit vegetables were within the safe levels. Among leafy vegetables, amaranthus and palak accumulated the highest content of all the four heavy metals studied.

Keywords

Heavy Metals, Contamination, Market Samples and Vegetables.

Full Text

   

A. N. Ganeshamurthy ¹, D. Kalaivanan ¹, B. L. Manjunath ¹

Affiliations
1 ICAR-Indian Institute of Horticultural Research, Hessaraghatta Lake Post, Ivar Kandapura, Bengaluru 560 089, IN

Abstract

National iron (Fe) and zinc (Zn) balance were computed using theoretical mean daily per capita dietary Fe and Zn requirement and composition of Fe and Znin foods in agriculture, horticulture, animal husbandry and fisheries sectors. The analyses imply a satisfactory situation that the intake of Fe and Zn through food sources by the Indian population is adequate. Despite sufficient availability of Fe and Zn through food, there is widespread Zn and Fe deficiency in our population.Ours is a vegetarian-dominant society. The phytate content of our foods is relatively high as the phytate content of vegetarian diets is high. This may be the main cause of the low absorption of Zn and Fe from the foods we eat. A sector-wise contribution indicated a major share of the agriculture sector, followed by the animal husbandry sector. Surprisingly, horticulture sector contributed a small portion (9.1% Zn and 12.9% Fe). The fisheries sector contributed the least.Given the multiple sources of uncertainty in following this method, caution must be exercised in interpreting the estimated figures for prevalence. Since our food sources are supplying enough Fe and Zn, our research efforts should therefore be diverted towards bioavailability rather than bio-fortification.

Keywords

Bioavailability, Food Sources, Iron, Micronutrient Deficiency, Vegetarian Diet, Zinc.

Full Text

   

A. N. Ganeshamurthy ¹, V. Ravindra ¹, T. R. Rupa ¹, R. M. Bhatt ¹

Affiliations
1 ICAR- Indian Institute of Horticultural Research, Bengaluru 560 089, IN

Abstract

Cultivated grafted mangoes are not the same as polyembryonic seedling-based wild mangoes in terms of biomass production and carbon sequestration. We estimated the carbon sequestration potential of mangoes in Konkan region, which is a prime mango belt of India producing the popular Alphonso mangoes. Allometric equation developed for grafted mangoes was used to estimate tree biomass. Konkan mango belt spread over 106,210 ha sequesters 9.913 mt of carbon. However, the carbon sequestration potential of these cultivated grafted mangoes is very low compared to polyembryonic seedling-grown mangoes in the wild. Since mangoes in the Konkan region have mostly occupied degraded lands of lateritic origin, such regions have been brought under productive mango orchards. As a consequence where forests have disappeared and mangoes have occupied the region, the carbon sequestered by them is a bonus apart from the production of mangoes. The administrators in these regions must use this information for claiming carbon credits for the benefit of farmers and the local population.

Keywords

Carbon Sequestration, Mango Orchards, Soil Carbon Stocks, Tree Biomass.

Full Text

   

A. N. Ganeshamurthy ¹, V. Ravindra ¹, T. R. Rupa ¹

Affiliations
1 Indian Institute of Horticultural Research, Bengaluru 560 089, IN

Abstract

Estimates of carbon stocks and stock changes in fruit orchards are necessary under the United Nations Framework Convention on Climate Change and the Kyoto Protocol. In this direction we estimated the carbon stocks in cultivated mango orchards in India using an exclusive allometric equation developed for estimation of tree biomass of grafted mangoes. Extensive tree, litter, weed and soil samples were collected for estimation of carbon pools by grouping mango areas based on similarity of tree canopy, climate, and dominance of mango varieties grown in these regions. The carbon held in these pools was then compiled and national-level carbon storage in cultivated mango orchards was computed by multiplying with the area occupied by mango in these regions. The country as a whole has sequestered 285.005 mt of carbon in its mango orchards. This is, however, very low compared to polyembrionic mango trees grown from seeds in the wild.

Keywords

Allometric Equation, Carbon Sequestration, Mango Orchards, Tree Biomass.

Full Text

   

A. N. Ganeshamurthy ¹, D. Kalaivanan ¹, T. R. Rupa ¹, H. B. Raghupathi ¹

Affiliations
1 Division of Natural Resource Management, ICAR - Indian Institute of Horticultural Research, Bengaluru - 560 089, IN

Abstract

Perennial horticulture in India has undergone a change from rainfed system to drip fertigation systems and from isolated hedge and bund trees to high intensity orchard systems with enhanced number of trees per unit area. In several parts, particularly in the Deccan plateau, the system has now become completely dependent on water pumped from tube wells. Severe competition for water from tube wells makes farmers to devote more water for cash rich annual crops and even sell water for city dwellers nearby. As a consequence, the groundwater level in the past three decades has fallen from few feet to above thousand feet. At several places it has crossed the “peak water”. Frequent and prolonged exposure of fruit trees and nuts to drought coupled with ground water depletion has led to soil profile drying leading to reduced vigour and enhanced vulnerability to diseases and pests. This has led to withering of fruit and nut trees. Perennial crops are likely to become increasingly maladapted to their environment, particularly in the earlier period of climate change they are more likely to be attacked by diseases and insects. Coconuts, areca nuts and mango trees have died in several places and the government constituted committees have recommended compensation to the farmers. As a country, we have dramatically increased our reliance on groundwater. 175 million Indians are now fed with food produced with the unsustainable use of groundwater. This increase has dried up rivers and lakes, because there is a hydrologic connection between groundwater and surface water. Yet the legal rules governing water use usually ignore the link between law and science. The issue needs thorough examination and needs policy interventions to come out of this vicious circle.

Keywords

Drought, Fruit Trees, Groundwater Depletion, Peak Water, Perennial Crops, Policy Issue.

Full Text

   

A. N. Ganeshamurthy ¹, S. Rajendiran ¹, D. Kalaivanan ¹, T. R. Rupa ¹

Affiliations
1 Division of Soil Science and Agricultural Chemistry, ICAR-Indian Institute of Horticultural Research, IN

Abstract

Zinc is considered as the fourth important yield limiting nutrient in India, after N, P, and K. From the regular soil analysis data, Indian soils (50%) are found to be deficient in Zn and the zinc deficiency is likely to increase in future. Areas with low soil available Zn are often regions with widespread zinc deficiency in humans. Zinc malnutrition and deficiency in human is alarming and is gaining attention in recent years. Application of zinc to soil and crops is one of the simple and easiest ways to mitigate or alleviate Zn deficiency in human. Moreover Zn uptake, its translocation and yield response of various crops to applied Zn are need to be focused for finding sustainable solutions to the problem of zinc deficiency in crops and humans. In this manuscript, importance of Zn to plants and human, Zn malnutrition problems in India and global level, soil Zn status of Karnataka, various factors that responsible for Zn deficiency in the soils of Karnataka and the response of various horticultural crops to Zn application in the region is discussed. Soil maps are believed to be an important tool to delineate and manage nutrient deficient areas. It also elaborates the effective Zn management strategies to improve crop productivity and farm income.

Keywords

Crop Production, Crop Quality, Karnataka, Horticultural Crops, Zinc Deficiency, Zn Management.

Full Text

   

A. N. Ganeshamurthy ¹, P. Govindakrishnan ², H. B. Raghupathi ¹, M. B. Mahendra Kumar ¹

Affiliations
1 ICAR-Indian Institute of Horticultural Research, Bengaluru - 560 089, IN
2 ICAR-Central Potato Research Institute, Shimla, IN

Abstract

A survey was conducted in potato fields for collection of leaf samples to establish nutrient concentration yield data bank. The data bank was used for developing multivariate compositional nutrient diagnosis (CND) norms for assessing the nutritional status of selected centres of potato growing fields. The mean N, P and K concentrations were 2.09, 0.25 and 4.16 %, respectively. The mean Ca (1.11%) concentration was twice higher compared to Mg (0.63 %) concentration. The mean values of Zn, Cu, Fe, Mn and B were 43.69, 31.24, 986.71, 192.76 and 59.98 ppm, respectively. The CND norms for V_N, V_P and V_K were 3.04, 0.94 and 3.73, respectively. The norm for Ca (V_Ca=2.45) and Mg (V_Mg=1.78) were much narrower compared to the absolute nutrient concentration. The norm for V_Zn, V_Cu, V_Fe, V_Mn and V_B were -3.24, -3.60, -0.23, -1.98 and -2.89respectively. The multivariate CND norms developed for ten nutrients proved to be an important tool for diagnosis of nutrient imbalance in potato. The nutrient indices developed indicated that Zn was the most common yield-limiting nutrient. The CND norms and the indices developed can be used for identifying the hidden hunger of various nutrients in potato for evolving nutrient management strategies.

Keywords

CND Norms, Nutrients and Potato.

Full Text

   

A. N. Ganeshamurthy ¹, B. Saritha ¹, T. K. Radha ¹, P. Panneerselvam ¹

Affiliations
1 Division of Soil Science, ICAR-Indian Institute of Horticultural Research, Hessaraghatta, Bengaluru 560 089, IN

Abstract

The growth of Actinobacteria was evaluated in a new modified nutrient agar media (MNA) supplemented with 1% sodium chloride (NaCl) and compared with the universally accepted media which are under regular use. Thirteen different Actinobacterial isolates were evaluated for their growth in both solid and liquid media in MNA along with four regularly used media ISP-2, kenknight, starch casein and nutrient media. Results indicated that eight isolates (Streptomyces bulli, Streptomyces griseorubens, Streptomyces viridobrunneus, Streptomyces A3, Streptomyces A7, Streptomyces A11, Streptomyces A12 and Streptomyces A13), out of thirteen isolates could grow significantly faster on MNA compared with other solid agar media. Similarly, growth in liquid media recorded by optical density (OD) indicated that three isolates (S. griseorubens, S. viridobrunneus and A7) showed significantly higher OD followed by ISP-2, nutrient, starch casein and kenknight broth after seven days of incubation. All the isolates except S. viridobrunneus and Streptomyces A12 could tolerate NaCl concentration upto 6% in liquid modified nutrient broth. The present study showed that Actinobacteria can be successfully grown faster with full pigmentation at 1% NaCl concentration and they can tolerate up to 5% NaCl concentration, in the new proposed MNA media.

Keywords

Actinobacteria, Modified Nutrient Agar Media, Optical Density, Sodium Chloride.

Full Text