scholarly journals THE EVAPOTRANSPIRATIVE DEMAND AND WATER USE EFFICIENCY OF MAIZE CROP (ZEA MAYS L.) IN THE SEMI-ARID TRACT OF INDIA

MAUSAM ◽  
2022 ◽  
Vol 45 (4) ◽  
pp. 337-346
Author(s):  
H. P. DAS ◽  
A. S. BALLAL

Mai ze is an Impo rta nt component o f th e d ry lau d fanning system o f India. In th e present study.d ata fur five years' period for three 51ation s. viz.. New Delhi. Rajendran agar an d Bellary in th e dry farm ing tr act ofInd ia have been iuili zed to und erstand evapotra nspira tive deman d of the crop in relat ion to pan-evaporat ion , andsolar rad iation. Biomet ric cha racte ristic. e.g.. heil:ht ofthe pla nt has also been analysed \'U-U-I';S meteorological facton.' V,lIer use efficie ncy of maul," has also been workedout nnd discu ssed . Th e analysis indica ted th ai th e maize plant uses maximum water during the flowering stage. Th e ETJEP rati ogradu ally in creases fmm germination aua ining a maximum value 8 to 10we eks after sowing.Th is ratio is found 10 besignilican tl)' correlated with the plan t height . The ETIR, curve was found 10 follow a sigm oid patt ern reac hingmaximum during flowering stage. Th e water use efficiency of maize crop vari es ove r wide margins in limeand space.

2002 ◽  
Vol 2 (1) ◽  
pp. 141-144 ◽  
Author(s):  
Muhammad Shafiq ◽  
Iqbal Hassan . ◽  
Zahid Hussain .

2016 ◽  
Vol 13 (2) ◽  
pp. 94-107 ◽  
Author(s):  
S Roy ◽  
M Barman ◽  
AM Puste ◽  
SK Gunri ◽  
K Jana

Field experiment was conducted at Instructional Farm, Jaguli (Mohanpur), Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India during two consecutive summer seasons of 2010-11, and 2011-12. The experiment was laid out in split-plot design having 4 levels of irrigation– rainfed without mulch, rainfed with mulch, irrigation at IW (depth of irrigation water) / CPE (Cumulative pan evaporation) ratios of 0.5 and 0.75 in main-plot and 4 inter cropping systems, sole maize, sole mungbean, maize + mungbean (1:1 row ratio) and maize + mungbean (3:2 row ratio) considered as sub-plot treatments replicated thrice. Results revealed that application of irrigation and intercropping systems markedly influenced the growth, yield and yield components (number of cobs/plant, number of grains/cob in case of maize and number of pods/plant and number of seeds/pod in case of mungbean) where the maximum value of these components were recorded with the application of irrigation at IW/CPE ratio 0.75 in sole crop. Maize-mungbean in 3:2 row ratio yielded higher than that of 1:1 intercropping system which might be due to less light interception and more competition for water and nutrition between both the crops. CU of water increased with the increasing levels of irrigation and the maximum value (17.75 kg ha-1 mm- 1) of WUE (water use efficiency) was observed with irrigation at IW: CPE ratio 0.75 under intercropping system of maize : mungbean in 3:2 row ratio followed by IW: CPE ratio 0.50. Among the sole crop, maximum WUE was with IW/CPE ratio 0.75 might be due to more consumption of water corresponding to production potential of maize, while, it was more under rainfed with mulch in mungbean. The relative crowding coefficient (RCC) also revealed both the intercropping systems were advantageous and the land equivalent ratio (LER) increased with the level of irrigation.Thus, maize grown in association with mungbean (3:2 row ratio) were found to be more profitable (B:C ratio of 2.58) with higher monetary advantage as compared to sole crop of maize (B:C ratio of 1.98) with the application of irrigation at IW: CPE ratio of 0.75 in new alluvial zone of West Bengal.SAARC J. Agri., 13(2): 94-107 (2015)


Author(s):  
Guvvali Thirupathaiah ◽  
A. Bhagwan ◽  
A. Kiran Kumar ◽  
K. Avil Kumar ◽  
D. Vijaya

An investigation was carried out on sandy loam soils of semi arid regions of southern Telangana to analyze the potential of drip irrigation along with mulch on mango fruit yield, water and nutrient use efficiency. The treatments of present study were comprised of two levels mulching (M0-without mulch and M1-with mulching), with silver Polyethylene of 100 micron thickness were used and two levels of irrigation (I1 -75% and I2 100% ETc through drip), here irrigation levels and mulching together constituting four treatment combinations with five replications under 2x2 factorial randomized block design and the treatment combinations are: I1M0-75% ETc + No mulching, I1M1- 75% ETc + with mulch, I2M0- 100% ETc + No mulching and I2M1- 100 % ETc + with mulch.  The study revealed that drip irrigation 100% ETc along with silver polythene mulch showed better performance in terms of yield, water use efficiency, nutrient use efficiency as well as economics. Maximum yield of 89.11 kg tree-1 combination of 75 % ETc + with mulching has proven the maximum water use efficiency (5.54 g liter-1 water consumption) and fertilizers use efficiency (0.89 q kg-1 fertilizer application) however along with maximum net return of 400973. 90 rupees ha-1, net return of 346873.90 ha-1 per hectare and B: C ratio of 7.41 was recorded in I2M1 (100 % ETc + with mulch). So the experiment suggests that drip irrigation along with mulch has the potential to provide greater benefit by optimizing the use of water resources. But the interaction of 75 % ETc + with mulching has proven the maximum water use efficiency (6.28 g liter-1 water consumption).


2020 ◽  
Vol 8 (3) ◽  
pp. 1466-1473
Author(s):  
Archana Kumari ◽  
Sanjay Kumar ◽  
Mainak Ghosh ◽  
Swaraj Kumar Dutta ◽  
Amit Kumar Pradhan ◽  
...  

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