scholarly journals Influence of Spring Season Crop Residue on Productivity of Rice-Wheat Cropping System

2006 ◽  
Vol 27 ◽  
pp. 53-58 ◽  
Author(s):  
KP Devkota ◽  
DN Yadav ◽  
NK Chaudhary ◽  
DR Dangol ◽  
KB Basnet
Keyword(s):  
Grain Yield ◽  
Cropping System ◽  
Wheat Crop ◽  
Spring Season ◽  
Wheat Grain ◽  
Net Profit ◽  
Split Plot ◽  
Residue Incorporation ◽  
Equivalent Yield ◽  
Plot Design

A field experiment was conducted to determine the effect of cultivation and plant residue incorporation of blackgram [Vigna mungo (L.) Hepper], mungbean [Vigna radiata (L.) Wilczek], cowpea (Vigna sinensis L.), maize (Zea mays L.) and maize+blackgram on response of rice to two levels (0 and 90 kg ha-1) of nitrogen and their residual effects on nitrogen management of subsequent wheat crop. The experiment was carried out in Randomized Complete Block design in spring, Split Plot design in rainy, and Split-Split plot design in winter seasons of 2000 at Institute of Agriculture and Animal Science (IAAS), Rampur, Chitwan, Nepal. Results showed that cultivation and incorporation of different spring season crop’s (legume and cereal) residue into the soil did not significantly affect rice yield. Such trend was also observed on wheat grain yield when spring season crops were followed by rice in a sequential cropping system. Significantly higher (p<0.001) rice equivalent yield (6.56 t ha-1) and net profit (Rs. 46489 ha-1) were obtained under mungbean-rice sequence. Similarly, significantly higher (p<0.001) wheat equivalent yield (8.74 t ha-1) and net profit (Rs. 44811 ha-1) were obtained under mungbean-rice-wheat sequence. Significantly higher yield of rice was obtained under 90 kg N ha-1 compared to control and had significant residual effect of N on wheat grain yield. Nitrogen topdressed at crown root initiation (CRI) and panicle initiation (PI) stages did not influence significantly on the grain yield of wheat. Therefore, for the long term sustainability of rice-wheat cropping system, inclusion of mungbean in the spring (fallow) season could be considered promising practice. Key words: Rice-wheat cropping system, sustainability, residue incorporation, nitrogen J. Inst. Agric. Anim. Sci. 27:53-58 (2006)

scholarly journals Performance of hybrid rice grown from separated tillers

2019 ◽  
Vol 17 (4) ◽  
pp. 507-513
Author(s):  
FN Kamarum Munira ◽  
Md. Parvez Anwar ◽  
Sabina Yeasmin ◽  
Md. Harun Or Rashid ◽  
Mst Farzana Rahman ◽  
...  
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Hybrid Rice ◽  
Rice Variety ◽  
Field Laboratory ◽  
Split Plot ◽  
Rice Seeds ◽  
Four Levels ◽  
Plot Design

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to November 2016 to investigate the performance of separated tillers of hybrid rice variety Dhani Gold. The experiment comprised three times of tiller transplantation viz. 3, 4 and 5 week aged tiller seedlings and four levels of number of tiller seedlings transplanted hill-1 viz. 2, 3, 4 and 5 tiller seedlings hill-1 laid out in a split plot design with 3 replications. The highest plant height was obtained when 3-week aged tiller seedlings were transplanted at the rate of 3 tiller seedlings hill-1. The highest number of total tillers hill-1 and number of effective tillers hill-1 were found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grains panicle-1 was obtained when 4-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grain yield was found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The lowest grain yield was found when 5-week aged tiller seedlings were transplanted with 2 tiller seedlings hill-1 in hybrid rice variety Dhani Gold. Based on the findings of the present study it may be concluded that 3-week old tiller seedlings of Dhani Gold should be transplanted at the rate of 4 or 5 tiller seedlings hill-1 for higher yield. Thus present study confirms the potentiality of growing hybrid rice from separated tillers in case of unavailability of seedlings or to minimize the seed cost of high value hybrid rice seeds. J Bangladesh Agril Univ 17(4): 507–513, 2019

scholarly journals Effects of conservation agriculture on productivity and Economics of maize-wheat based cropping systems in midwestern Nepal

2019 ◽  
Vol 17 (1) ◽  
pp. 49-63
Author(s):  
K Pariyar ◽  
A Chaudhary ◽  
P Sapkota ◽  
S Sharma ◽  
CB Rana ◽  
...  
Keyword(s):  
Grain Yield ◽  
Cropping Systems ◽  
Cropping System ◽  
Conservation Agriculture ◽  
Crop Productivity ◽  
Conventional Tillage ◽  
Net Income ◽  
Zero Tillage ◽  
Higher Plant ◽  
Equivalent Yield

The effects of two tillage methods (zero tillage and conventional tillage), two residue managements (residue kept and residue removed) and two levels of cropping system (maize + soybean and sole maize) were studied over 3 years (2015-2017) at Dailekh district of Nepal. Arun-2 and Puja were the varieties of maize and soybean used respectively, followed by winter wheat. The results revealed that the maize + soybean system had significantly higher plant population and ear population (34.83 thousands ha-1 and 34.35 thousands ha-1, respectively), grains per row (37.1), ear length (16.6 cm) and 20.5% higher grain yield as compared to sole maize. The highest maize equivalent yield (7.92 t ha-1) was recorded in maize + soybean as compared to the lower grain yield equivalent (7.06 t ha-1) in sole maize. Zero tillage accounted relatively higher benefits (high net income and B:C ratio) as compared to conventional tillage. The residue kept plot resulted significantly higher B:C ratio (2.41) than the residue removed (2.11) and the maize + soybean recorded 82.5% greater B:C ratio compared to sole maize. Net annual income was significantly higher in zero tillage, residue kept and maize + soybean system (NRs. 223072.00, 222958.00 and 269016.00 ha-1 respectively). Such combinations are recommended for Dailekh district of Nepal to have profitable crop productivity. SAARC J. Agri., 17(1): 49-63 (2019)

Direct and Residual Effect of Planting Method and Phosphorous Levels on Productivity and Agro-Meteorological Indices, Thermal and Energy Efficiencies in Mungbean– Wheat Cropping System

2019 ◽  
Author(s):  
Parveen Kumar ◽  
Karmal Singh ◽  
K D Sharma ◽  
Anil Kumar ◽  
Amit Kumar
Keyword(s):  
Field Experiments ◽  
Residual Effect ◽  
Cropping System ◽  
Research Area ◽  
Yield Attributes ◽  
Planting Methods ◽  
Split Plot ◽  
Raised Bed ◽  
Planting Method ◽  
Plot Design

Field experiments were conducted for two consecutive years during kharif and rabi season of 2015-16 and 2016-17 at Research area, Department of Agronomy, CCSHAU, Hisar to evaluate the direct and residual effect of planting methods and phosphorus levels on productivity, agro-meteorological indices, thermal and energy efficiencies in mungbean– wheat cropping system. The experiment was laid out in split plot design during kharif and in split -split plot design during Rabi with five replications at same site during both the years. Main plot treatments consisted of planting methods viz. furrow irrigated raised bed (FIRB) and conventional where as sub plot consisted of three levels of phosphorus, viz., 30, 40 and 50 kg P2O5 /ha applied to mungbean in kharif and sub -sub treatments applied to wheat in rabi were 40, 50 and 60 kg P2O5 /ha. Sowing of mungbean and wheat crops on beds i.e. furrow irrigated raised bed was superior over conventional sowing in respect of productivity. In mungbean, application of 50 kg P2O5/ha to mungbean significantly increased grain yield over 30 and 40 kg P2O5/ha, respectively but it did not differ significantly with 40 kg P2O5/ha. The residual effect of phosphorous applied to mungbean was found to be non significant on yield attributes and yield of wheat. However, direct application of phosphorous to wheat had significant effect on yield attributes and yield. The agro meteorological indices values were similar under FIRB and conventional method however, thermal and energy efficiencies were higher under FIRB planting as compared to conventional and increased with increasing levels of phosphorous.

scholarly journals Nitrogen application rate and timing management for improved grain quality parameters of wheat crop

2021 ◽  
Vol 58 (04) ◽  
pp. 1141-1153
Author(s):  
Gul Roz Khan
Keyword(s):  
Grain Yield ◽  
Grain Quality ◽  
Irrigation System ◽  
Quality Parameters ◽  
Wheat Crop ◽  
Change Scenario ◽  
Wheat Grain ◽  
Flood Irrigation ◽  
Recent Climate ◽  
Use Efficiency

Nitrogen use efficiency under flood irrigation system is generally low (30%) in field crops, which is one of the fundamental factors of high production cost in the developing countries. Optimum rate and timing of N-application is otherwise important to harvest good quality grain for backing in the recent climate change scenario. Optimum N-rate (NAR) corresponds with the application timing (NAT) has resulted in good quality grains. Aim of the study was to focus on spring wheat grain quality and N use efficiency (NUE) with NAR {i.e., 0, 100, 120, 140 and 160 kg ha-1) and NAT (i.e., 100% at sowing (NAR1), 50% at sowing and 50% at tillering (NAT2), 25% at sowing, 50% at tillering and 25% at booting (NAT3) and 25% at sowing, 25% at tillering and 50% at booting (NAT4)}. Treatment impacts were investigated focusing grain yield, grain-N, and quality parameters (i.e., crude protein, gluten, amylose and amylopectin). Experiment was a randomized complete block, in three replications, conducted at Agronomy Res. Farm of the University of Agric. Peshawar in 2016-17 and repeated in 2017-18. Results showed the highest NUE in100 kg N ha-1, followed by a decreasing rate (p<0.05) for every next N-increment. While averaged on N-rates, the highest NUE observed in NAT3 which did not differ fromNAT4 but decreased (p<0.05) for treatment NAT2 with lowest for theNAT1. Pakhtunkhuwa-2015 showed higher NUE among the varieties. Grain-N, grain yield, gluten and amylose did not differ with NAR 140 and 160 kg ha-1 as well as for the NAT3 and NAT4 but decreased for NAT2 and the lowest was noted for NAT1. The N-content of wheat grain was highest in Pakhtunkhuwa-2015, followed by Pirsabak-2015 and the lowest in DN-84. Nonetheless, grain amylopectin showed a reduction with increasing NAR and/or split N-applications from one to two and/or three doses. Cultivars did not show any changes in the amylopectin. It is concluded that in recent climate changes where flood irrigation system is practiced, three N-splits (NAT3 or NAT4) resulted higher quality grains with140 kg N ha-1 to wheat crop

scholarly journals Interactive effects of irrigation and flobond on growth and yield of BRRI dhan29

2019 ◽  
Vol 30 (2) ◽  
pp. 165-172
Author(s):  
MZ Rahman ◽  
R Ahmed ◽  
A Shila ◽  
MM Hasan ◽  
MHK Howlader
Keyword(s):  
Grain Yield ◽  
Science And Technology ◽  
Rice Variety ◽  
Interactive Effects ◽  
Growth And Yield ◽  
Soil Conditioner ◽  
Straw Yield ◽  
Split Plot ◽  
Plot Design

The experiment was conducted at the Research Farm of Patuakhali Science and Technology University (PSTU), Patuakhali during the period from December-May of 2015 to evaluate the effect of irrigation and soil conditioner on growth and yield of BRRI dhan29. A modern HYV rice variety BRRI dhan29 was grown under four different frequency of irrigation viz., four times, six times, eight times and ten times with five rates of flobond(soil conditioner), viz., 0.0, 5.0, 10.0, 15.0 and 20.0 per plot. The experiment was laid out in a split plot design with four replications. Irrigation and rate of soil conditioner and their interaction significantly influenced the yield contributing and other crop characters. It was observed that the highest grain yield (7.08 t ha-1) was obtained from eight times irrigations, but the highest straw yield was obtained from ten times irrigations (6.706 t ha-1).The highest grain yield (7.21 t ha-1) was obtained with 10g Flobond per plot but the highest straw yield (6.29 t ha-1) was obtained with no Flobond. However, the highest grain yield (8.38 t ha-1) was obtained with eight times irrigation coupled with 10g of Flobond per plot as soil conditioner and the lowest one (5.5 t ha-1) was obtained in four times irrigation and no Flobond. So, eight times irrigation coupled with 10g of Flobond per plot as soil conditioner was the best combination for obtaining best yield. Progressive Agriculture 30 (2): 165-172, 2019

Influence of preseason weed management and in-crop treatments in two successive wheat crops 1. Weed seedling numbers and wheat grain yield

1993 ◽  
Vol 33 (2) ◽  
pp. 167 ◽  
Author(s):  
PM Dowling ◽  
PTW Wong
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Seed Set ◽  
Seedling Emergence ◽  
Grass Species ◽  
Wheat Crop ◽  
Annual Grass ◽  
Wheat Grain ◽  
Heavy Grazing ◽  
Annual Grasses

The effect of 5 preseason management treatments on seed set reduction of annual weed grasses and their regeneration in the following autumn was evaluated in a 2-year field experiment commencing at Orange in spring 1986. Preseason (spring) treatments were paraquat, glyphosate (2 rates), unsprayed heavy grazing, and unsprayed control. In the first of 2 successive wheat crops (planted 1987), 3 in-crop weed control treatments [control, chlorsulfuron (both sod-seeded), and trifluralin plus cultivation] were imposed. In 1988, the second wheat crop was sown into a cultivated seedbed or direct-drilled. The preseason treatments reduced potential annual grass regeneration by 91-99% compared with the control, with heavy grazing being the best treatment. For each preseason treatment compared with the control, the pattern of actual seedling emergence within the crop during 1987 was similar to that of potential emergence for each grass species (except Lolium rigidum), but numbers were lower and more variable (7-86% of potential numbers). The proportion of Bromus spp. and Vulpia spp. emerging within the crop declined from the first to the second crop, while L. rigidum increased to an average of 93% of the annual grass population in 1988. Trifluralin plus cultivation increased the control of annual grasses in 1987. In 1988, the 1987 in-crop treatments had little carryover effect on annual grass control; however, wheat grain yield was increased by both chlorsulfuron and trifluralin. Preseason management reduced seed set of annual grass weeds, and this control was maintained under cropping for at least 2 years (except for L. rigidum). Wheat grain yield responded to this control. Long-term control of L. rigidum where soil is disturbed appears difficult because of apparent long-lived seed in the soil.

Does 3,4-dimethylpyrazole phosphate or N-(n-butyl) thiophosphoric triamide reduce nitrous oxide emissions from a rain-fed cropping system?

Soil Research ◽  
2018 ◽  
Vol 56 (3) ◽  
pp. 296 ◽  
Author(s):  
Guangdi D. Li ◽  
Graeme D. Schwenke ◽  
Richard C. Hayes ◽  
Hongtao Xing ◽  
Adam J. Lowrie ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Grain Yield ◽  
Crop Yields ◽  
Cropping System ◽  
N2o Emission ◽  
Nitrous Oxide Emissions ◽  
Wheat Crop ◽  
N2o Emissions ◽  
Urease Inhibitors ◽  
Eastern Australia

Nitrification and urease inhibitors have been used to reduce nitrous oxide (N2O) emissions and increase nitrogen use efficiency in many agricultural systems. However, their agronomic benefits, such as the improvement of grain yield, is uncertain. A two-year field experiment was conducted to (1) investigate whether the use of 3,4-dimethylpyrazole phosphate (DMPP) or N-(n-butyl) thiophosphoric triamide (NBPT) can reduce N2O emissions and increase grain yield and (2) explore the financial benefit of using DMPP or NBPT in a rain-fed cropping system in south-eastern Australia. The experiment was conducted at Wagga Wagga, New South Wales, Australia with wheat (Triticum aestivum L.) in 2012 and canola (Brassica napus L.) in 2013. Results showed that urea coated with DMPP reduced the cumulative N2O emission by 34% for a wheat crop in 2012 (P < 0.05) and by 62% for a canola crop in 2013 (P < 0.05) compared with normal urea, but urea coated NBPT had no effect on N2O emission for the wheat crop in 2012. Neither nitrification nor urease inhibitors increased crop yields because the low rainfall experienced led to little potential for gross N loss through denitrification, leaching or volatilisation pathways. In such dry years, only government or other financial incentives for N2O mitigation would make the use of DMPP with applied N economically viable.

Effect of grazed lucerne on the moisture status of wheat-growing soils

1978 ◽  
Vol 18 (90) ◽  
pp. 112 ◽  
Author(s):  
ICR Holford ◽  
AD Doyle
Keyword(s):  
Soil Moisture ◽  
Grain Yield ◽  
Soil Water ◽  
New South ◽  
Cropping System ◽  
Wheat Crop ◽  
Subsequent Growth ◽  
South Wales ◽  
Severe Reduction ◽  
Available Soil Moisture

The effects of varying durations of lucerne ley and subsequent wheat cropping on the moisture status of contrasting wheat growing soils are reported from two experiments in northern New South Wales. Lucerne leys of 5 1/2, 3 1/2 and 1 1/2 years on a red brown earth and 3 1/2, 2 1/2, and 1 1/2 years on a black earth were compared with a wheat-cowpea rotation, long fallow and continuous wheat. Lucerne extracted available soil water within eight months of sowing to a depth of 100 cm, with partial extraction of water to 150 cm. Within 18 months available water to a depth of 200 cm had been extracted. Subsequent growth of lucerne was dependent on incident rainfall and water extraction from depths greater than 200 cm. Wheat extracted water from the soil only to a depth of 150 cm, and extracted less water to this depth than did lucerne. Lucerne extracted water beyond the -1 5 bar suction level. On the black earth, soil moisture at 150 cm had not been recharged before time for sowing the third wheat crop, 28 months after lucerne plough-out. On the red brown earth, after a drought enforced long fallow immediately following lucerne plough-out, soil water at 200 cm was recharged within 18 months. Available soil moisture after three to five months fallow following plough-out of the lucerne leys was much less than for a wheat cropping system, with a consequent severe reduction in the grain yield of the following wheat crop. On the black earth grain yield was reduced by 7.7 kg ha-1 for each reduction of 1 mm in available moisture in the first crop after lucerne plough-out. Data indicate that lucerne must be ploughed out before January if a severe reduction in yield of the following wheat crop is to be minimized.

scholarly journals Effects of conservation agriculture on crop productivity and water-use efficiency under an irrigated pigeonpea–wheat cropping system in the western Indo-Gangetic Plains

2016 ◽  
Vol 154 (8) ◽  
pp. 1327-1342 ◽  
Author(s):  
T. K. DAS ◽  
K. K. BANDYOPADHYAY ◽  
RANJAN BHATTACHARYYA ◽  
S. SUDHISHRI ◽  
A. R. SHARMA ◽  
...  
Keyword(s):  
Grain Yield ◽  
Water Use Efficiency ◽  
Water Use ◽  
Cropping System ◽  
Conservation Agriculture ◽  
Crop Productivity ◽  
Wheat Grain ◽  
Gangetic Plains ◽  
Grain Yields ◽  
Use Efficiency

SUMMARYIn search of a suitable resource conservation technology under pigeonpea (Cajanus cajanL.)–wheat (Triticum aestivumL.) system in the Indo-Gangetic Plains, the effects of conservation agriculture (CA) on crop productivity and water-use efficiency (WUE) were evaluated during a 3-year study. The treatments were: conventional tillage (CT), zero tillage (ZT) with planting on permanent narrow beds (PNB), PNB with residue (PNB + R), ZT with planting on permanent broad beds (PBB) and PBB + R. The PBB + R plots had higher pigeonpea grain yield than the CT plots in all 3 years. However, wheat grain yields under all plots were similar in all years except for PBB + R plots in the second year, which had higher wheat yield than CT plots. The contrast analysis showed that pigeonpea grain yield of CA plots was significantly higher than CT plots in the first year. However, both pigeonpea and wheat grain yields during the last 2 years under CA and CT plots were similar. The PBB + R plots had higher system WUE than the CT plots in the second and third years. Plots under CA had significantly higher WUE and significantly lower water use than CT plots in these years. The PBB + R plots had higher WUE than PNB + R and PNB plots. Also, the PBB plots had higher WUE than PNB in the second and third years, despite similar water use. The interactions of bed width and residue management for all parameters in the second and third years were not significant. Those positive impacts under PBB + R plots over CT plots were perceived to be due to no tillage and significantly higher amount of estimated residue retention. Thus, both PBB and PBB + R technologies would be very useful under a pigeonpea–wheat cropping system in this region.

scholarly journals Productivity and Profitability of Cotton-wheat Cropping System as Influenced by Complex Fertilizers

2020 ◽  
pp. 1-7
Author(s):  
B. S. Brar ◽  
G. S. Dheri ◽  
Fatehjeet Singh Sekhon
Keyword(s):  
Economic Analysis ◽  
Grain Yield ◽  
Cropping System ◽  
Wheat Crop ◽  
Cotton Yield ◽  
Straw Yield ◽  
Net Return ◽  
Stalk Yield

An experiment was conducted during 2012-13 and 2013-14 at Ludhiana, Punjab to find out the productivity and profitability of the cotton-wheat cropping system as influenced by complex fertilizers. The experiment was comprised of nine fertilizer treatments. The results demonstrated that significantly higher cotton yield and stalk yield was recorded under T9 -AP60+S15+Zn1.5 (15.3 q/ha and 50.5 q/ha respectively in 2012 and 22.2 q/ha and 55.6 respectively in 2013) which was statistically at par with T6 – DAP (P60)+S15+Zn1.5 (15.0 q/ ha and 50.4 q/ha respectively in 2012 and 22.1 q/ha and 55.4 q/ha, respectively in 2013). Similarly in wheat crop, T9 -AP60+S15+Zn1.5 gave significantly higher grain yield and straw yield (39.0 q/ha and 63.0 q/ha, respectively in 2012-13 and 45.6 q/ha and 73.6, respectively in 2013-14) which was comparable with T6 – DAP (P60)+S15+Zn1.5 (38.5 q/ ha and 62.8 q/ha respectively in 2012-13 and 44.4 q/ha and 72.4 q/ha in 2013-14)  as compare to other treatments. Economic analysis indicated higher net return (₹ 8739.0) and B:C ratio (0.37) for cotton under T8- AP30+S7.5+Zn0.75 whereas T9 -AP60+S15+Zn1.5 net return (₹14417.5) and B:C ratio (1.07) for wheat as compare with other treatments.

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