scholarly journals Understanding changes in cassava root dry matter yield by different planting dates, crop ages at harvest, fertilizer application and varieties

2022 ◽  
Vol 133 ◽  
pp. 126448
Author(s):  
Rebecca Oiza Enesi ◽  
Stefan Hauser ◽  
Pieter Pypers ◽  
Christine Kreye ◽  
Meklit Tariku ◽  
...  
Keyword(s):  
Dry Matter ◽  
Fertilizer Application ◽  
Dry Matter Yield ◽  
Planting Dates ◽  
Cassava Root

scholarly journals Dry matter yield of forage corn in the late milk stage of development depending on the planting dates in the steppe zone of the Crimea

2020 ◽  
Author(s):  
A.V. Cherkashyna ◽  
◽  
E.F. Sotchenko ◽  
Keyword(s):  
Dry Matter ◽  
Maximum Yield ◽  
Steppe Zone ◽  
Planting Date ◽  
Severe Drought ◽  
Dry Matter Yield ◽  
Planting Dates ◽  
Stage Of Development ◽  
Moisture Availability ◽  
Sowing Dates

Dry matter yield is an objective indicator of assessing the productivity of corn hybrids grown for silage and green fodder. The aim of the work was to identify optimal planting dates to obtain maximum yield of dry matter at the late milk stage of development for hybrids of corn depending on groups of maturity under rain-fed conditions of the Crimean steppe zone. The sowing dates of the field experiment were on April 5th, 15th, and 25th. We studied hybrids of corn of different groups of maturity. Soil – chernozems southern low-humus. Meteorological conditions in 2016 were characterized by increased moisture availability (Selyaninov Hydrothermal Coefficient (HTC) 1.46). In 2017, severe drought was noted (HTC 0.34). Moisture availability was insufficient in 2018 and 2019 (HTC 0.79 and 0.78, respectively). In 2016-2019, the best planting date for hybrid ‘Nur’ was April 15th; the dry matter yield in the late milk stage was 6.69 t/ha. For the medium- early hybrid ‘Mashuk 220 MV’, the best sowing dates were April 15th and 25th; dry matter yield was 5.95 and 5.78 t/ha, respectively. Hybrid ‘Mashuk 355 MV’ demonstrated higher dry matter yield on April 5th and 15th (7.12 and 6.99 t/ha). However, the planting date of April 25th led to significant yield decreased (to 6.1 t/ha).

RESPONSE OF PEAS TO ENVIRONMENT: I. PLANTING DATE AND LOCATION

1966 ◽  
Vol 46 (1) ◽  
pp. 77-85 ◽  
Author(s):  
H. F. Fletcher ◽  
A. R. Maurer ◽  
D. P. Ormrod ◽  
B. Stanfield
Keyword(s):  
Dry Matter ◽  
Planting Date ◽  
Growth Characteristics ◽  
Growth And Yield ◽  
Maximum Temperature ◽  
Dry Matter Yield ◽  
Dark Skin ◽  
Planting Dates ◽  
The Mean ◽  
Maximum Temperatures

The effect of 15 planting dates on various growth characteristics of peas var. Dark Skin Perfection was studied in outdoor pot experiments at Vancouver and Agassiz, B.C. Differences in growth and yield between locations and planting dates were partly accounted for by the mean of maximum temperatures for the growth period.At Agassiz where temperatures exceeded the optimum for most growth characteristics in many of the later plantings, the mean of maximum temperatures was negatively correlated with total dry-matter yield, peas per pod, and pea yield; was positively correlated with branching; and had no effect on pods per plant, double-podded nodes, and tillering. At Vancouver, where temperatures were suboptimum for the early plantings and approached optimum for the later plantings, the mean of maximum temperatures was positively correlated with total dry-matter yield, pods per plant, double-podded nodes, tillering, and pea yield but had no effect on peas per pod or branching. A seasonal mean maximum temperature of 68 to 70°F was considered to be optimum for peas.

scholarly journals Agro-Morphological Traits And Root Yield Of An Improved Cassava (Manihot Esculenta Crantz) Variety Under Nutrient-Applied Conditions In Offinso Municipality Of Ghana

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Kwadwo Gyasi Santo ◽  
Abdulai Muntala ◽  
Patrick Mawuenyegan Norshie
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Poultry Manure ◽  
Field Studies ◽  
Fertilizer Application ◽  
Mineral Fertilizers ◽  
Dry Matter Yield ◽  
Root Yield ◽  
Manihot Esculenta Crantz ◽  
Number Of Stems

Field studies were undertaken at Offinso in the Ashanti Region of Ghana during the 2015/2016 growing season to evaluate growth, root and dry matter yields of an improved cassava variety (Bankyehemaa) treated with poultry manure (PM), NPK 15-15-15 and NPK 23-10-10 fertilizers. The treatment structure was a 3 x 4 factorial, laid out in a Randomized Complete Block Design with three replications. Three levels of fertilizer (600 kg/ha NPK 15-15-15, 600 kg/ha NPK 23-10-10 and 2 t/ha PM) were applied at 6, 8, 10 and 12 weeks after planting. The parameters measured included plant height, fresh and dry shoot weights, number of stems per plant, stem girth, fresh and dry root yields and total dry matter yield. The data collected were subjected to analysis of variance using the Genstat Statistical package. Main effects of fertilizer type and time of fertilizer application on most of the parameters measured were not significant. However, the interaction effects of the two factors were significant in all the parameters measured. Vegetative growth of Bankyehemaa increased when mineral fertilizers were applied earlier than 12 weeks after planting. The highest fresh and dry shoot weights and the biggest stems were produced when NPK 15-15-15 fertilizer was applied at 6 weeks after planting. Plants treated with NPK 15-15-15 fertilizer at 10 weeks after planting were the tallest, while those treated with NPK 23-10-10 fertilizer at 8 weeks after planting produced the highest number of stems per plant. Application of poultry manure at 6 weeks after planting produced the highest fresh cassava root yield of 28.10 t/ha. The highest dry matter yield of 19.80 t/ha was obtained when poultry manure was applied at 12 weeks after planting.

Effect of Planting-Date on Nodulation and Dry-matter Yield of Cowpea in Nigeria

1966 ◽  
Vol 2 (1) ◽  
pp. 45-47 ◽  
Author(s):  
G. P. Tewari
Keyword(s):  
Field Experiment ◽  
Dry Matter ◽  
Planting Date ◽  
Principal Factor ◽  
Day Length ◽  
Dry Matter Yield ◽  
Planting Dates ◽  
Split Plot

SummaryA split-plot field experiment was conducted to investigate the influence of planting dates on the formation of nodules in a variety of cowpea (Paraguay 6). Results indicated that the principal factor influencing both nodulation and yield was day-length, the highest number of effective nodules being produced from the June planting.

The effect of rejuvenation of Aspen Parkland ecoregion grass–legume pastures on dry matter yield and forage quality

2000 ◽  
Vol 80 (4) ◽  
pp. 781-791 ◽  
Author(s):  
H. A. Lardner ◽  
S. B. M. Wright ◽  
R. D. H. Cohen ◽  
P. Curry ◽  
L. MacFarlane
Keyword(s):  
Dry Matter ◽  
Forage Quality ◽  
Fertilizer Application ◽  
High Rate ◽  
Dry Matter Yield ◽  
Liquid Form ◽  
Liquid Fertilizer ◽  
Wide Range ◽  
Aspen Parkland ◽  
Split Plot

A 3-yr study was conducted on Black and Gray Wooded soils at five different sites in the Aspen Parkland of Saskatchewan to determine the effect of spiking, burning, mowing, deep-banding (Trt) and applications of N, P, K and S liquid and granular fertilizers (Fert) on dry matter yield (DMY) and forage quality of primarily smooth bromegrass (Bromus inermis Leyss.) and alfalfa (Medicago sativa L.) pastures. Fertilizer application was a liquid form blended to provide 100 kg N ha–1, 45 kg P2O5 ha–1, 23 kg K2O ha–1 and 12 kg S ha–1 in 350 kg of fertilizer ha–1. The experimental design at each site was a randomized complete block in a split-plot arrangement. Main plots were spike, burn, mow, deep-band, deep-band liquid fertilizer and control. The split-plot treatment was granular fertilizer broadcast at 0 and 350 kg ha−1 (providing 100 kg N ha−1, 45 kg P2O5 ha−1, 23 kg K2O ha–1 and 12 kg S ha−1). All treatments were applied in the spring of 1994. Interaction effects of Trt × Yr and Fert × Yr were significant (P < 0.05) indicating a wide range of response to the rejuvenation methods among years. Spiking reduced (P < 0.05) DMY in year 1 at two sites. Deep-banding and mowing increased (P < 0.05) DMY at one site in year 3. Burning increased (P < 0.05) DMY in years 1 and 2 only at the Gray Wooded soil site. In year 1, liquid plus granular fertilizer (200 kg N ha–1) [deep-banded liquid fertilizer (DBLIQ at 100 kg N ha−1) + broadcast fertilizer (+F at 100 kg N ha−1] increased DMY at all sites by 84 to 185% over control plots. This effect carried over (P < 0.05) into year 2 at four sites but not the third and final year. The high rate of N (200 kg N ha−1) of the DBLIQ + F almost doubled (P < 0.05) crude protein content of year 1 forage, 170.3 g kg−1 compared with 96.4 g kg–1 for control. It was concluded that an application of broadcast or liquid fertilizer alone or combined with mechanical treatments will produce a significant effect on herbage yield and quality but only in the short term. Key words: Rejuvenation, fertilizer, spike, burn, deep-band, quality

scholarly journals Residual effect of pig slurry on common carpet grass pasture

2017 ◽  
Vol 21 (6) ◽  
pp. 374-378
Author(s):  
Daiane C. K. Albuquerque ◽  
Simone M. Scheffer-Basso ◽  
Pedro A. V. Escosteguy ◽  
Karen D. Brustolin-Golin ◽  
Valdirene Zabot ◽  
...  
Keyword(s):  
Nitrogen Uptake ◽  
Dry Matter ◽  
Block Design ◽  
Residual Effect ◽  
Fertilizer Application ◽  
Residual Effects ◽  
Organic N ◽  
Pig Slurry ◽  
Dry Matter Yield ◽  
Gradual Release

ABSTRACT This study investigated the residual effects of pig slurry (PS) applied to common carpet grass pasture (Axonopus affinis) for two years (September 2008-March 2010) on dry matter yield and forage-nitrogen uptake from October 2010-May 2011. A field experiment was conducted in a randomized complete block design with four replications. The treatments were 102, 204, 306, 408, and 510 m3 ha-1 pig slurry applied for two years; one mineral nitrogen rate (1,250 kg ha-1 ammonium nitrate) for two years; and no nitrogen fertilization (control). The pasture was cut at intervals of 48, 34, 43 and 69 days, which corresponded to 266, 300, 343, and 412 days after the last fertilizer application, respectively. Dry matter yield increased by 398 kg ha-1 for each 100 m3 of PS applied, the equivalent of 317 and 564 kg ha-1 for each 100 kg ha-1 of inorganic and organic N applied, respectively. The residual effect of PS on dry matter yield and forage-nitrogen uptake ranged from 11-45% and 8-40%, respectively, indicating a gradual release and availability of N in PS, which can help reduce the amounts of nitrogen applied to pasture.

scholarly journals Effect of Planting Dates and Nitrogen Fertilizer on Growth and Yield of Safflower

2021 ◽  
Vol 910 (1) ◽  
pp. 012026
Author(s):  
Zainab N. M. A. Al-Zubaidy ◽  
Maher H. S. Al-Mohammad
Keyword(s):  
Seed Yield ◽  
Nitrogen Fertilizer ◽  
Harvest Index ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Dry Matter Yield ◽  
Planting Dates ◽  
Two Factors ◽  
Significant Superiority

Abstract A field experiment was carried out during winter agricultural season 2020/2021 in Babylon Governorate in at Tajieh region, southeast of Hilla city, to study the effect of planting dates and nitrogen fertilizer on the growth and yield of safflower. The experiment included two factors: planting dates (1 and 15 November and 1 December), and nitrogen fertilizer at levels (0, 90, 120 and 150 kgN.ha-1), the treatments were distributed in a factorial experiment with a randomized completely block design (RCBD) with three replicates. The results showed significant superiority of planting date at December 1 on most growth and yield components parameters, it recorded the highest averages on seed yield, dry matter yield and harvest index amounted to 1576.2, 6126.0 kg.ha-1 and 25.6% respectively. However, nitrogen fertilizer at concentration 150 kg N.ha-1 affected all growth and yield and its components, it gave the highest averages for seed yield, dry matter yield and harvest index amounted to 1762.2, 6626.8 kg.ha-1 and 26.6%, respectively.

THE PRODUCTIVITY AND CHEMICAL COMPOSITION OF ALTAI WILD RYEGRASS AS INFLUENCED BY TIME OF IRRIGATION AND TIME AND RATE OF N FERTILIZATION

1980 ◽  
Vol 60 (4) ◽  
pp. 1179-1189
Author(s):  
T. LAWRENCE ◽  
G. E. WINKLEMAN ◽  
F. G. WARDER ◽  
H. C. KORVEN
Keyword(s):  
Chemical Composition ◽  
Seed Yield ◽  
Dry Matter ◽  
Fertilizer Application ◽  
N Fertilization ◽  
N Fertilizer ◽  
Dry Matter Yield ◽  
N Content ◽  
Clear Cut ◽  
P Content

The effects of five times of irrigation, two times of N-fertilizer application and four rates of N-fertilizer application on the seed yield, dry matter yield, N, P, NO3-N, Ca, Mg, and K content and K/(Ca+Mg) ratio of Altai wild ryegrass (Elymus angustus Trin.), were studied from 1974 to 1977. No clear-cut methods to maximize the seed yield on irrigated land were found. Highest dry matter yields were obtained from grass given three irrigations and 400 kg N/ha per year. Spring applications of N fertilizer resulted in forage with a higher N content than fall applications. The N content of the forage increased with increasing levels of N fertilizer, whereas the P content of the forage was reduced by N fertilizer applications. Toxic levels of nitrates can be expected from spring applications of 400 kg N/ha. This danger was reduced if N fertilizer was applied in the fall. The Ca, Mg and K content increased with increasing levels of N fertilizer. The K/(Ca+Mg) ratio indicated that there was little danger of grass tetany problems in animals fed fertilized Altai wild ryegrass.

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