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Choudhary V.K.,National Institute of Biotic Stress Management | Choudhary V.K.,ICAR Research Complex for North eastern Hills Region | Kumar P.S.,National Institute of Abiotic Stress Management | Kumar P.S.,ICAR Research Complex for North eastern Hills Region
Indian Journal of Agronomy | Year: 2014

An experiment was conducted at Basar, during 2008–11 on maize (Zea mays L.)–based cropping systems, to evaluate the production, root growth and weed dynamics with and without mulch. The productivity of sequential crops was 18–35% higher with mulch application than no mulch. However, the highest maize yield (4.25 t/ha) was obtained with maize–groundnut (Arachis hypogaea L.) cropping system, followed by maize–pea (Pisum sativum L.; 4.24 t/ha). Similarly, yield of sequence crop was the highest with Frenchbean (Phaseolus vulgaris L.; 4.91 t/ha). Maize–equivalent yield and production efficiency were the highest with maize–Frenchbean system (10.1 t/ha and 42.4 kg/ha/day respectively). Land-use efficiency was found maximum with maize–Indian mustard [Brassica juncea (L.) Czernj. & Cosson] system (71.9%) followed by maize–groundnut system. Root length, dry weight, volume number and density were recorded higher with groundnut (50.2 cm, 6.9 g/plant, 43.3 cc, 20.8 and 160.5 mg/ cc respectively) followed by Indian mustard and lowest with Frenchbean. However, specific root length was highest with pea (12.0 cc/g). Density, dry weight, index and persistency of weed were the highest with maize–fallow, followed by maize–Frenchbean system. However, weed-smothering efficiency was the maximum with maize–groundnut (59.4%), followed by maize–Indian mustard system (58.6%). Mulched plot registered the least said weed parameters with 65% weed-smothering efficiency. Soil-moisture content 30, 60 and 90 days after sowing (DAS) was higher with maize–groundnut system, followed by maize–Indian mustard system, and between the mulch, no mulched plot had considerably lower soil moisture than the mulched ones. © 2014, Indian Society of Agronomy. All rights reserved. Source

Yadav G.S.,ICAR Research Complex for North eastern Hills Region | Yadav G.S.,ICAR Research Complex for NEH Region | Datta M.,ICAR Research Complex for North eastern Hills Region | Datta M.,ICAR Research Complex for NEH Region | And 12 more authors.
Indian Journal of Agronomy | Year: 2015

A field experiment was conducted at ICAR Research Complex for North-Eastern Hills Region Tripura Centre, Tripura (W), to study effect of tillage and crop-establishment techniques on productivity, profitability and soil health under maize (Zea mays L.)–maize–field pea (Pisum sativum L.) cropping system. The experiment comprised 6 treatments, viz. conventional tillage with flat bed planting (CT-FB), conventional tillage with ridge and furrow planting (CT-RF), conventional tillage with raised bed planting (CT-RB), no-till with flat bed planting (NT-FB), no-till with ridge and furrow planting (NT-RF) and no-till with raised bed planting (NT-RB). Green cobs yield of summer maize was 25.3–27.4% and field pea seed yield was 17.9–32.2% higher under NT-RF and NT-RB than CT-RF. Rainy season (kharif) maize grown under NT-RF recorded 12.66% less grain yield than the CT-RF. The NT-RB resulted in the maximum system productivity to the tune of 16.34 and 14.55 t/ha in 2012–13 and 2013–14, respectively. The average system productivity was 6.1% higher under systems than to CT systems. Net returns and benefit: cost ratios showed the similar trends as shown by system productivity. Under the NT-FB, soil organic carbon was 13.2% higher than CT-FB. However, the CT-RB recorded higher soil pH as compared to all the other treatments. The available nitrogen, phosphorus and potassium were higher with NT systems compared to CT systems. Therefore, cultivation of maize–maize–field pea cropping system under NT-RB system may be adopted for higher productivity and profitability and for sustaining the soil health. © 2015, Indian Society of Agronomy. All rights reserved. Source

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