Informatics Publishing Limited

Gopal Kumar ¹, D. R. Sena ², R. S. Kurothe ¹, V. C. Pande ¹, B. K. Rao ¹, A. K. Vishwakarma ¹, G. L. Bagdi ¹, P. K. Mishra ²

Affiliations
1 Central Soil and Water Conservation Research and Training Institute, Research Centre, Vasad 388 306, IN
2 Central Soil and Water Conservation Research and Training Institute, 218, Kaulagarh Road, Dehradun 248 195, IN

Abstract

Watershed management is considered as a way for sustainable rural development and thus impact evaluation is a must. The common approach of postclassification comparison of pre- and post-implementation satellite imageries for watershed impact evaluation suffers from serious limitations, mainly ignoring the changes which are not due to watershed interventions. To minimize such biases, control area approach is proposed and relative change in watershed compared to control area is attributed to watershed management. The studied four clusters of watershed in Vidarbha region, Maharashtra show that the effect of the watershed could stand out irrespective of pre- and post-implementation conditions of satellite imageries.

Keywords

Advantage Watershed, Change Detection, Impact Evaluation, Remote Sensing, Watershed Management.

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Brajendra ¹, A. K. Vishwakarma ², Meghna Sarma ³

Affiliations
1 ICAR-Indian Institute of Rice Research, Hyderabad (Telangana), IN
2 ICAR-Indian Institute of Soil Science, Bhopal (M.P.), IN
3 ICAR - Research Complex for North Eastern Hill Region, Umiam (Meghalaya), IN

Abstract

The pH of the soil is the most important characteristic in determining fertility of the soil. Soil reaction (pH) affects various physical, chemical and biological properties of soils. Upland soils are usually characterized as highly erodible, leached in Mizoram and mostly soils are acidic to varying degree. Soils in their reaction varied from 4.79 to 6.14 in Kolasib district, 4.7 to 6.65 in Mammit district, 4.99 to 5.76 in Aizawl district, 4.51 to 5.71 in Serchip district, 4.59 to 6.49 in Lunglei district, 4.96 to 6.03 in Lawangtalai district, 5.94 to 7.24 in Saiha district and 4.99 to 5.92 in Champhai district . The organic matter content varied from 0.4 to 4.14 per cent with an average value of 2.22.

Keywords

Soil, Acidity, Land Use.

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Brajendra ¹, A. K. Vishwakarma ², Meghna Sarma ³

Affiliations
1 ICAR-Indian Institute of Rice Research, Hyderabad (Telangana), IN
2 ICAR-Indian Institute of Soil Science, Bhopal (M.P.), IN
3 ICAR Research Complex for North Eastern Hill Region, Umiam (Meghalaya), IN

Abstract

Block level samples were collected from surface (0-15 cm depth) soils under major land use systems of Mizoram. Different forms of sulphur, their availability status were inventorized. Surface samples from all the RBDs of Mizoram were analyzed developed under different land forms and land use. Thirty six per cent soils sampled were medium in available sulphur status (10 ppm - 30 ppm). Thirty five per cent soils sampled were found to be low in available sulphur (<10ppm). Twenty nine per cent soils sampled were found to be high (>30ppm). Status of available sulphur was found to be medium in most of the soils.

Keywords

Forms of Sulphur, Availability.

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A. K. Vishwakarma ¹, Brajendra ¹, K. A. Pathak ¹, B. S. Kherawat ²

Affiliations
1 I.C.A.R. Research Complex for NEH Region, Mizoram Centre, Kolasib (Mizoram), IN
2 Division of Crop Improvement, Central Soil Salinity Research Institute, Karnal (Haryana), IN

Abstract

A study was carried out on varying doses of lime to maize in an acid soil of Mizoram to determine the effect of lime on yield and its attributes in maize. Lime treatments ranged from 0, 1, 1.5 and 2 t/ha. The maize variety RCM 1-1 was tested with or without added lime. Trials showed lime increased pH increased yield up to its highest dose of application. However, it did not significantly increase yield. Plant height in maize ranged from 170 cm when no lime (control) to 241.75 cm with 2t/ha of lime addition. Sixteen per cent, 35 per cent and 43 per cent increase in yield was observed at different levels of lime over no lime application. Almost 19 per cent, 35 per cent and 43 per cent increase in no. of grains/cob was recorded at different levels of lime over no lime use.

Keywords

Lime, Maize, No Lime, Yield, Mizoram.

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