8 research outputs found
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No full textNot AvailableA field experiment was conducted at Central Arid Zone Research Institute, Regional Research
Station , Bikaner during Kharif seasons of 2012 and 2013 on Squash Melon (Tinda) crop under
rainfed conditions to evaluate four treatments of Farm Yard Manure viz.,0,20,30 and 40 t ha-1 and
three treatment of mulching viz., no mulch ,straw mulch and plastic mulch. Experiment was conducted
in split – plot design with three replications using the Tinda cv. Selection 1. Vine length, numbers of
fruits per plant and yield of squash melon (Tinda) crop were significantly influenced by FYM, mulching
and their interaction during both the years of experiment. Application of FYM recorded significant
improvement in yield up to 30 t ha-1. Averaged across mulching, the yield with application of FYM
@ 20, 30 and 40 t ha-1 had 43.3, 83.9 and 87.4 % higher yield compared to control. Application of
mulch brought significant improvement in yield and its component. The straw mulch recorded highest
vine length, numbers of fruits per plant and yield. Plastic and straw mulch had 24.80 and 42.25 %
higher yield than no-mulch. The response of mulch varied with level of FYM application. The highest
yield was recorded with application of 40 FYM t ha-1 combined with straw mulch, however the
difference between FYM 30 t ha-1 and 40 t ha-1 was non-significant under both straw and plastic
mulching.Not Availabl
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No full textNot AvailableSquash melon (Citrullus vulgaris var. fistulosus Steward) is a rainfed crop in arid region but in these areas, the rainy days are very less. Due to this reason, the farmers could not get desired yield. Hence supplemental irrigation with water conservation practices is required for getting the economic return from this crop. Hence an experiment was conducted at ICAR-Central Arid Zone Research Institute, Regional Research Station, Bikaner, Rajasthan to study the effect of three mulching treatments (No mulching, straw mulching (2.5 tonnes/ha) using local shrub Leptadenia pyrotechnica and black polyethylene plastic mulching of 25 micron thickness) and four FYM doses (0, 20, 30 and 40 tonnes/ha) on growth, yield, WUE and economics of Squash melon grown with supplemental irrigation during kharif seasons of 2012 and 2013. Vine length, numbers of fruits per plant and yield of squash melon were significantly influenced by FYM, mulching and their interaction during both the years of experiment. Application of FYM caused significant improvement in squash melon yield up to 30 tonnes/ha. Averaged across mulching treatments, application of FYM @ 20, 30 and 40 tonnes/ha resulted 47.8, 79.5 and 88.4% higher yields compared to control. Application of mulch brought significant improvement in yield and yield components and the response of mulch varied with the level of FYM application. Plastic and straw mulching resulted 26.6 and 48.6% higher yield over no-mulch treatment. Straw mulch recorded the longest vine length, the highest numbers of fruits per plant and yield. The highest yield was recorded with application of 30 tonnes FYM /ha combined with straw mulch.Not Availabl
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No full textNot AvailableIncreasing evidence over the past few decades indicate that the global surface temperature is on the rise due to increasing concentration of green house gases. The increase in earth surface temperature is expected to affect reference crop evapo-transpiration (ET0) and consequently the crop water requirements. In the present study, hypothetical increase of surface mean temperature by 1, 2, 3 and 4oC was considered and their sensitivity on ET0 was studied for a semi-arid area using CROPWAT software. Simulation results indicated 2.5, 4.6, 6.8 and 9 per cent increase in mean monthly and annual ET0 values with the increase in present mean temperature by 1, 2, 3 and 4oC, respectively for the study area. The impact of the projected increase of ETo on already stressed water resources would be significant particularly in the semi-arid region of our country.Not Availabl
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No full textNot AvailableThe experiments were conducted during kharif 2003 and 2004 seasons
to analyze the genotypic variations in stomatal regulation and root traits and their
association with yield parameters in moth bean (Vigna aconitifolia Jacq.) under
water scarcity conditions of arid zone. Wide range of variations in total dry matter
(TDM), pod yield (PY) and seed yield (SY) were noticed among the 26 genotypes.
Our results suggest that genotypes with thick leaves (low SLA) exhibit more drought
tolerance by keeping their stomata open at lower relative water content (RWC)
in leaves. Significant relationship of specific leaf area (SLA) with both seed yield
(r2= 0.57) and relative water content (RWC) (r2= 0.49) suggested that low SLA
could be an important leaf trait for selecting moth bean genotypes for higher yield
under water-deficit conditions. The strong relationship of specific root weight (SRW,
root weight per unit root length) with TDM (r2= 0.73) and PY (i= 0.56) indicated
that selection of genotypes with extensive root system would enhance the yield
of moth bean under water scarcity conditions of arid zone. This study suggested
that SLA, a cost-effective and easily measurable leaf trait, and/or SRW are the
potential selection criteria to enhance the moth bean yield under rainfed conditions
of the arid zone.Not Availabl
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No full textNot AvailableSeveral studies around the globe shows that chane in global surface temperature, rainfall, evaporation and extreme events since the start of 20th century . The studies ahowed that climatic change is likely to have a significant impact upon fresh water resources availability . The demand for water has al-ready increased tremendously over the years due to an increasing population, expanding agriculture, rapid industrialization, urbanization and economic devel-opment. In this context, analyzing and forecasting climate change impacts on water requirement of hor-ticulture crops is vital before devising suitable adap-tation strategies and planning and management of limited water resources in arid and semi-arid region of country . An overview of the global warming and cli-mate change, trends in increase in temperature and change in precipitation over Indian sub continent are compared with global trends. This paper also pre-sents an overview of current water resources sce-nario in India, and recent work carried out in India to asses the climate change impact on water resources.Not Availabl
