scholarly journals Thermal indices in relation to crop phenology and seed yield of pigeon pea (Cajanus cajan L. Millsp.) grown in the north bank plains zone of Assam

MAUSAM ◽  
2021 ◽  
Vol 67 (2) ◽  
pp. 397-404
Author(s):  
RIJUMANI RAJBONGSHI ◽  
PRASANTA NEOG ◽  
P. K. SARMA ◽  
KUSHAL SARMAH ◽  
M. K. SARMA ◽  
...  
Keyword(s):  
Seed Yield ◽  
Sandy Loam ◽  
Growth Period ◽  
Pigeon Pea ◽  
Flower Bud ◽  
Thermal Indices ◽  
Seed Formation ◽  
Physiological Maturity ◽  
Sowing Dates ◽  
Use Efficiency

Two varieties of pigeon pea viz., BC (local) and ICPL 88039 were grown on the sandy loam soils of AICRPDA research farm of B. N. College of Agriculture, AAU in two consecutive kharif seasons of 2012-13 to 2013-14. Both the cultivars were sown on three different dates at ten days interval starting from 3rd June to 23rd June. GDD accumulation for attaining different phenological events viz., emergence, initiation of 1st flower bud and flower appearance, 50 per cent flowering, 1st pod formation, 1st seed formation and physiological maturity were worked out. The cumulative GDD accumulations up to physiological maturity were relatively higher in BC (local) which varied from 3395.6 to 3593.5 °C day, whereas, in ICPL 88039, it varied from 2945.0 to 3296.7 °C day in different sowings and seasons. A decreasing trend in accumulated GDD for attaining any Phenological event was observed with successive delay in sowings in both the cultivars in the two seasons. In both the crop seasons, Pheno-Thermal Index (PTI) varied from 16.67 to 18.18 °C day growth day-1, in BC (local) and 18.31 to 19.11 °C day growthday-1 in ICPL 88039 during the vegetative growth period under all the sowing dates while, in the reproductive growth stage, it was comparatively lower and ranged from 7.96 to 8.23 °C day growthday-1 in BC (local) and 10.28 to 11.87 °C day growthday-1 in ICPL 88039. Seed yield heat use efficiency (HUE) in BC (local) varied from 0.207 to 0.296 kg ha-1 °Cday-1, whereas, in ICPL 88039 it varied from 0.201 to 0.312 kg ha-1°Cday-1 under different sowing dates in both crop seasons. Seed yield heat use efficiency was relatively higher in 2013-14 followed by 2012-13 in both the cultivars which indicated the significant differences in using the heat, available to the plants.   

Variety × Nutrient management interaction in greengram for important yield attributes under rainfed red lateritic inceptisol

2017 ◽  
Author(s):  
Ashok Mishra ◽  
B. S. Rath ◽  
S. K. Mukhi ◽  
S. S. Mishra ◽  
S. K. Mohanty ◽  
...  
Keyword(s):  
Seed Yield ◽  
Management Practices ◽  
Nutrient Management ◽  
Sandy Loam ◽  
Yield Attributes ◽  
Nutrient Treatment ◽  
Rainfed Upland ◽  
Loam Soil ◽  
Use Efficiency ◽  
The Mean

The effect of five nutrient management practices on the yield and yield attributes, nutrient uptake and rain water use efficiency in four greengram varieties (Dhauli, Pusa-9531, OBGG-52 and Nayagarh Local) in rainfed upland inceptisol with sandy- loam soil was studied in factorial RBD with three replications during Kharif 2009 to 2012. Significant variety × nutrient interaction was observed with respect to seed yield, nodulation and other yield attributing characters. Based on the mean data over four years (2009-2012), highest seed yield of 5.84 q ha-1 was observed in Pusa 9531 with lime+50% organic+ 50% inorganic treatment followed by Dhauli (5.53 q ha-1) with the same nutrient treatment. Highest RWUE was found in Lime + 50% organic + 50% inorganic treatment in all the varieties followed by 100% organic treatment in Dhauli, Pusa-9531 and OBGG-52 but in 50% organic + 50% inorganic treatment in case of Nayagarh Local. The uptake of N, P and K was also observed to be the highest in Lime + 50% organic + 50% inorganic treatment in all the varieties.

scholarly journals Phenology and thermal indices of maize (Zea mays L.) influenced by subsoil compaction and nitrogen fertilization under semi-arid irrigated conditions

2014 ◽  
Vol 6 (2) ◽  
pp. 349-355
Author(s):  
Jagdish Singh ◽  
M. S. Hadda
Keyword(s):  
Nitrogen Fertilization ◽  
Soil Compaction ◽  
Weather Conditions ◽  
Soil Science ◽  
Yield Reduction ◽  
Thermal Indices ◽  
Physiological Maturity ◽  
Use Efficiency ◽  
Different Levels ◽  
Subsoil Compaction

The magnitude of yield reduction due to soil compaction is variable and depends on the soil type, fertility status and other soil and environmental factors. The present investigation was carried out at the research farm, Department of Soil Science, Punjab Agricultural University, Ludhiana. The experiment was conducted to evaluate the effect of different levels of subsoil compaction and nitrogen fertilization on maize phenology, yield and heat use efficiency. The C2 (subsoil bulk density (Db)= >1.8 Mg m-3) treatment reduced yield by 15.5 and 24.3 % and heat use efficiency (HUE) by 15.2 and 20.9 % than that in C0 (subsoil Db=1.55-1.65 Mg m-3) treatment during the year 2012 and 2013, respectively. The tasseling and silking stage was delayed, while physiological maturity was advanced under C2 subsoil compaction treatment than that in C0 treatment. The N2 treatment improved the yield by 14.9 and 13.9 % and HUE by 15.2 and 14.3 % than that in N0 treatment during the year 2012 and 2013, respectively. Maize took more days to reach physiological maturity under N2 treatment as compared to N0 treatment. Phenothermal index (PTI) showed that crop reached different stages earlier under C1 and C2 than that of C0. The data emphasized the need to take care of soil strength and soil temperature related parameters along with weather conditions for better yield prediction using thermal time.

Influence of omitting irrigation and nitrogen levels on growth, yield and water use efficiency of coriander ( Coriandrum sativum L.)

2008 ◽  
Vol 56 (1) ◽  
pp. 69-74 ◽  
Author(s):  
A. Kumar ◽  
R. Singh ◽  
R. Chhillar
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Sandy Loam ◽  
Winter Season ◽  
Growth Yield ◽  
Growth And Yield ◽  
Seed Formation ◽  
Yield Attributes ◽  
Formation Stage ◽  
Use Efficiency

A field experiment conducted on the sandy loam soil in New Delhi during the winter season of 2003–2004 indicated that the application of three irrigations at the branching, flowering and seed formation stages gave the maximum values of growth and yield attributes (plant height and branches plant −1 , umbels plant −1 , umbellets umbel −1 and seeds umbel −1 ) with the highest seed and stover yields, but was at par with omitting one irrigation at the seed formation stage. The data on the growth and yield indicated that, compared to the other stages, omitting irrigation at the flowering strage resulted in the greatest reduction. The growth and yield attributes and the seed and stover yield of coriander significantly responded to fertilization up to 80 kg N ha −1 . The crop evapotranspiration was the highest with the application of three irrigations, but the water use efficiency remained the highest when irrigation was omitted at the seed formation stage. Nitrogen fertilization up to 120 kg and 80 kg N ha −1 increased the water use and water use efficiency, respectively.

Flowering and pod and seed development in pigeon pea (Cajanus cajan)

1990 ◽  
Vol 115 (3) ◽  
pp. 327-335 ◽  
Author(s):  
A. O. Togun ◽  
T. O. Tayo
Keyword(s):  
Seed Development ◽  
Seed Yield ◽  
Cajanus Cajan ◽  
Pigeon Pea ◽  
Field Trials ◽  
Flowering Period ◽  
Physiological Maturity ◽  
Terminal Inflorescence ◽  
Total Seed ◽  
Ibadan Nigeria

SUMMARYFlower, pod and seed development were studied in the cultivars Cita-1 and Cita-2 in two field trials in 1985–86, in Ibadan, Nigeria. Flowering within any inflorescence was acropetal. On each plant the terminal inflorescence was the first to flower and, generally, inflorescences developed basipetally. A total of 569 flowers (mean of five plants) opened on Cita-1; of these, 20 were on the terminal inflorescence, 130 on axillary inflorescences and 419 on inflorescences on primary branches. For the 605 flowers (mean of five plants) which opened on Cita-2, the distribution was 19, 161 and 425, respectively.On Cita-1, 158 pods formed on average, of which 7 were on the terminal inflorescence, 33 on axillary inflorescences and 118 on inflorescences on primary branches lower down the plant. On Cita-2, for the 185 pods counted at maturity, the distribution was 8, 43 and 134, respectively. Some 72 and 69% of the total number of flowers which opened on Cita-1 and Cita-2, respectively, were aborted. In both cultivars, 99% of the mature pods were formed from flowers which opened within 24 days of the start of anthesis; the number of pods retained largely determined seed yield. The inflorescences which developed on the primary branches contributed 70% (Cita-1) and 66% (Cita-2) of the total seed yield. Early-formed pods were heavier than those formed later. Individual pods attained physiological maturity 35–42 days after successful pollination of the flower. At physiological maturity of the pod, the seed contained 3·72 % N, 0·45% P and 2·76% K, and the husk contained 1·98% N, 0·16% P and 1·96% K. The majority of open flowers which aborted were produced on primary branches, indicating that the primary branches have the greatest potential for increasing seed yield. A shorter flowering period might ensure greater retention of open flowers.

scholarly journals Nitrous oxide emission and nitrogen use efficiency in response to nitrophosphate, N-(n-butyl) thiophosphoric triamide and dicyandiamide of a wheat cultivated soil under sub-humid monsoon conditions

2014 ◽  
Vol 11 (9) ◽  
pp. 13571-13603 ◽  
Author(s):  
W. X. Ding ◽  
Z. M. Chen ◽  
H. Y. Yu ◽  
J. F. Luo ◽  
G. Y. Yoo ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Sandy Loam ◽  
Wheat Yield ◽  
Nitrification Inhibitor ◽  
Growth Period ◽  
N2o Emission ◽  
N Fertilizer ◽  
N2o Emissions ◽  
Nitrification Inhibitors ◽  
Use Efficiency

Abstract. A field experiment was designed to study the effects of nitrogen (N) source and urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) or nitrification inhibitor dicyandiamide (DCD) on nitrous oxide (N2O) emission and N use efficiency (NUE) in a sandy loam soil. Six treatments including no N fertilizer (control), N fertilizer urea alone (U), urea plus NBPT (NBPT), urea plus DCD (DCD), urea plus NBPT and DCD (NBPT + DCD), and nitrate-based fertilizer nitrophosphate (NP) were designed and implemented separately during the wheat growth period. Seasonal cumulative N2O emissions with urea alone amounted to 0.49 ± 0.12 and were significantly (P < 0.05) reduced to 0.28 ± 0.03, 0.31 ± 0.01 and 0.26 ± 0.01kg N2O-N ha−1 by application of DCD, NBPT and NBPT + DCD, respectively. Cumulative N2O emissions from NP were 0.28 ± 0.01kg N2O-N ha−1. A single N2O flux peak was identified following basal fertilization, and DCD and/or NBPT inhibition effects mainly occurred during the peak emission period. The NP application significantly (P < 0.05) increased wheat yield by 12.3% and NUE from 28.8% (urea alone) to 35.9%, while urease and/or nitrification inhibitors showed a slight increase effect. Our results clearly indicated that the application of urea as basal fertilizer, but not as supplemental fertilizer, together with DCD and NBPT is an effective practice to reduce N2O emissions. The application of NP instead of urea would be an optimum agricultural strategy for reducing N2O emissions and increasing crop yield and NUE for wheat cultivation in soils of the North China Plain.

scholarly journals Optimizing sowing date for peanut genotypes in arid and semi-arid subtropical regions

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252393
Author(s):  
Muhammad Ijaz ◽  
Ahmad Nawaz ◽  
Sami Ul-Allah ◽  
Ahmad Sher ◽  
Abdul Sattar ◽  
...  
Keyword(s):  
Seed Yield ◽  
Arid Regions ◽  
Sandy Loam ◽  
Sowing Date ◽  
Atmospheric Temperature ◽  
Arachis Hypogea ◽  
Sowing Dates ◽  
Yield Trial ◽  
Arid Condition ◽  
Semi Arid

Peanut (Arachis hypogea L.) is an important nut crop extensively grown in rainfed regions of Pakistan. The crop requires low inputs; thus, could grow successfully under diverse environmental conditions. Due to pegging ability, peanut grows aggressively in sandy and sandy-loam soils. However, it has not introduced to Thal region of southern Punjab, Pakistan. A two-year field experiment was conducted to optimize sowing dates for two peanut genotypes (‘BARI-2016’ and ‘NO-334’) in Thal region (Layyah). Similarly, a yield trial was conducted at Chakwal where both genotypes are extensively grown. Five sowing dates (10th April, 1st May, 20th May, 10th June and 30th June) were included in the study. The highest seed yield was obtained with early sown crop (10th April) during both years. Pod formation reduced with increasing atmospheric temperature and no pods were formed on the plants sown on 30th June. Decreased pod formation seemed a major reason for low yield in late-sown crop. The highest yield was observed for the crop sown on 10th April, which was decreased by 40% for the crop sown on 1st May. Genotype ‘BARI-2016’ performed better for seed yield at both locations compared with ‘NO-334’. The results suggested that genotype ‘BARI-2016’ is more adaptive to arid and semi-arid condition under rainfed or irrigated conditions. Sowing peanut at optimum time would increase seed yield in arid and semi-arid regions. Nonetheless, ‘BARI-2016’ can be grown under rainfed and irrigated conditions successfully.

scholarly journals Physiological Traits Study to Identify Suitable Mustard Genotype for Late Sown Condition of Northern Part of India

2021 ◽  
Author(s):  
Akanksha Singh Yadav ◽  
Lallu . ◽  
Maharaj Singh
Keyword(s):  
Seed Yield ◽  
Oil Content ◽  
Sandy Loam ◽  
Cropping Systems ◽  
Indian Mustard ◽  
Sowing Date ◽  
Rabi Season ◽  
Sowing Time ◽  
Sowing Dates ◽  
Loam Soil

Background: Indian mustard (Brassica juncea L.) is a prominent seed crop grown in most of the northern part of India. It is also grown in different cropping systems where sowing time differs as per availability of vacant field prior to preceding crop. Being a rabi season (winter) crop its physiological as well as morphological developments are markedly influenced by temperature condition.Methods: An investigation was carried out during rabi season of 2010-11 and 2011-2012 at oilseeds research farm Kanpur (UP) with 4 sowing dates (30th Sept. 11th 21st, 31st Oct.) and 5 genotypes (Kranti, Maya, PAC-437, PBR-357, Rohini) of mustard on sandy loam soil under irrigated condition to study different physiological and yield attributing characters.Result: The results shown that among the sowing dates, 11th October registered the highest values of specific leaf weight (SLW), Crop Growth rate (CGR) estimated at 60-90 DAS, seed yield and oil content. The early sowing at 30th Sept. registered significantly lowest seed yield (1880 Kgha-1) and seed oil content (38%). In case of genotypes, PAC-437 registered highest values of SLW (29.60 mgcm-2), NAR (113.3 mg dm-2 day-1), RGR (26.7 mg g-1 day-1), CGR (0.94g plant-1 day) at 60-90 DAS, seed yield (2079 kg ha-1). The interaction effect of sowing date × genotypes was found significant in most of the cases. Thus, the results concluded in Indian condition specially the northern part, 11th October proved to be the optimum sowing time of mustard. As far as the genotype is concerned, Kranti perform well of this date of sowing while PAC-437 proved its superiority over other genotypes as well as different sowings date of October month.

scholarly journals Effect of sowing dates and genotypes on the yield of coriander (Coriandrum sativum L.)

2015 ◽  
Vol 40 (1) ◽  
pp. 109-119
Author(s):  
M Moniruzzaman ◽  
MM Rahman ◽  
MM Hossain ◽  
AJM Sirajul Karim ◽  
QA Khaliq
Keyword(s):  
Seed Yield ◽  
Linear Response ◽  
Dry Matter ◽  
Winter Season ◽  
Coriandrum Sativum ◽  
Dry Matter Accumulation ◽  
Maximum Heat ◽  
Sowing Dates ◽  
Stover Yield ◽  
Use Efficiency

A field experiment on coriander (Coriandrum sativum L.) taking five sowing dates viz. November 01, November 16, December 01, December 16 and December 31 and four selected genotypes viz. CS001, CS007, CS008 and CS011 was conducted during the Winter season of 2009-10 at Bangabandhu Sheikh Mujibur Rahman Agricultural University to study heat efficiency for the crop. The crop sown on November 16 and the genotype CS011 showed the highest heat use efficiency for dry matter, seed and stover yield. Heat use efficiency for dry matter as well as seed yield increased from November 01 to November 16 and then decreased with delayed sowing. November 16 sowing coupled with CS011 gave the maximum heat use efficiency for seed yield. Growing Degree Days (GDD) showed a positive linear response with dry matter accumulation and coefficient of regression was high in November 16 sowing as well as in CS011. Heat use efficiency showed a negative linear response with maximum (y = 2.058 – 0.054, R2 = 0.682*), minimum (y = 2.123 – 0.070x, R2 = 0.687*) and mean (y = 2.13 – o.063x, R2 =0.709*) temperature but positive linear response with relative humidity (y = 0.074x – 5.593, R2 = 0.702*).Bangladesh J. Agril. Res. 40(1): 109-119, March 2015

scholarly journals Nitrous oxide emission and nitrogen use efficiency in response to nitrophosphate, N-(n-butyl) thiophosphoric triamide and dicyandiamide of a wheat cultivated soil under sub-humid monsoon conditions

2015 ◽  
Vol 12 (3) ◽  
pp. 803-815 ◽  
Author(s):  
W. X. Ding ◽  
Z. M. Chen ◽  
H. Y. Yu ◽  
J. F. Luo ◽  
G. Y. Yoo ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Sandy Loam ◽  
Wheat Yield ◽  
Nitrification Inhibitor ◽  
Growth Period ◽  
N2o Emission ◽  
N Fertilizer ◽  
N2o Emissions ◽  
Nitrification Inhibitors ◽  
Use Efficiency

Abstract. A field experiment was designed to study the effects of nitrogen (N) source and urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) or nitrification inhibitor dicyandiamide (DCD) on nitrous oxide (N2O) emission and N use efficiency (NUE) in a sandy loam soil. Six treatments including no N fertilizer (control), N fertilizer urea alone (U), urea plus NBPT (NBPT), urea plus DCD (DCD), urea plus NBPT and DCD (NBPT plus DCD) and nitrate-based fertilizer nitrophosphate (NP) were designed and implemented separately during the wheat growth period. Seasonal cumulative N2O emissions with urea alone amounted to 0.49 ± 0.12 kg N2O-N ha−1 and were significantly (P < 0.05) reduced to 0.28 ± 0.03, 0.31 ± 0.01 and 0.26 ± 0.01 kg N2O-N ha−1 by application of DCD, NBPT and NBPT plus DCD, respectively. Cumulative N2O emissions from NP were 0.28 ± 0.01 kg N2O-N ha−1. A single N2O flux peak was identified following basal fertilization, and DCD and/or NBPT inhibition effects mainly occurred during the peak emission period. The NP application significantly (P < 0.05) increased wheat yield by 12.3% and NUE from 28.8% (urea alone) to 35.9%, while urease and/or nitrification inhibitors showed a slight increase effect. Our results clearly indicated that the application of urea as basal fertilizer, but not as supplemental fertilizer, together with DCD and NBPT is an effective practice to reduce N2O emissions. The application of NP instead of urea would be an optimum agricultural strategy for reducing N2O emissions and increasing crop yield and NUE for wheat cultivation in soils of the North China Plain.

Irrigation and water use in leafless peas (Pisum sativum)

1992 ◽  
Vol 119 (2) ◽  
pp. 211-222 ◽  
Author(s):  
S. N. Silim ◽  
P. D. Hebblethwaite ◽  
C. Jones
Keyword(s):  
Water Use ◽  
Seed Yield ◽  
Moisture Stress ◽  
Field Trials ◽  
Growth And Yield ◽  
Previous Season ◽  
Sowing Dates ◽  
Use Efficiency ◽  
Effect Of Moisture ◽  
The University

SUMMARYField trials at the University of Nottingham, UK, in 1979 and 1980 investigated the effect of moisture stress on the growth and yield of the leafless dried pea Filby. In the absence of drought, the crop photosynthetic area was increased and maturity delayed. Seed yield was increased by the production of a greater number of reproductive nodes and a reduced abortion of flowers and pods.In the second season, two sowing dates were also tested. Later sowing reduced the seed yield under the high and low moisture treatments by 14 and 33% respectively, due to an increased abortion of flowers and pods. The high moisture treatment reduced the water use efficiency (WUE) in this season and WUE was lower for the later sown crops, but there was no effect on WUE in the previous season.The seed yield and water use of pot-grown leafless peas were lower than were those of a nearisogenic line of leafed peas. Moisture stress reduced the yield of both phenotypes but the effect on the leafless pea was greater. Moisture stress imposed at flowering reduced yields more than it did at pod filling and there was an additive effect of moisture stress at both times.

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