Interactive Effect of Phosphorus and Nitrogen on Leaf Anthocyanins, Tissue Nutrient Concentrations, and Dry‐Matter Yield of Floralta Limpograss during Short Day Length

2008 ◽  
Vol 39 (7-8) ◽  
pp. 1006-1015 ◽  
Author(s):  
N. P. Shaikh ◽  
M. B. Adjei ◽  
J. M. Scholberg
Keyword(s):  
Dry Matter ◽  
Interactive Effect ◽  
Day Length ◽  
Nutrient Concentrations ◽  
Dry Matter Yield ◽  
Short Day ◽  
Tissue Nutrient Concentrations

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.

scholarly journals Challenges for Simulating Growth and Phenology of Silage Maize in a Nordic Climate with APSIM

Agronomy ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 645
Author(s):  
Julien Morel ◽  
David Parsons ◽  
Magnus A. Halling ◽  
Uttam Kumar ◽  
Allan Peake ◽  
...  
Keyword(s):  
Biomass Production ◽  
Dry Matter ◽  
Field Measurements ◽  
Day Length ◽  
Dry Matter Yield ◽  
High Latitudes ◽  
Crop Phenology ◽  
Silage Maize ◽  
Use Efficiency ◽  
Radiation Use

APSIM Next Generation was used to simulate the phenological development and biomass production of silage maize for high latitudes (i.e., >55°). Weather and soil data were carefully specified, as they are important drivers of the development and growth of the crop. Phenology related parameters were calibrated using a factorial experiment of simulations and the minimization of the root mean square error of observed and predicted phenological scaling. Results showed that the model performed well in simulating the phenology of the maize, but largely underestimated the production of biomass. Several factors could explain the discrepancy between observations and predictions of above-ground dry matter yield, such as the current formalization of APSIM for simulating the amount of radiation absorbed by the crop at high latitudes, as the amount of diffuse light and intercepted light increases with latitude. Another factor that can affect the accuracy of the predicted biomass is the increased duration of the day length observed at high latitudes. Indeed, APSIM does not yet formalize the effects of extreme day length on the balance between photorespiration and photosynthesis on the final balance of biomass production. More field measurements are required to better understand the drivers of the underestimation of biomass production, with a particular focus on the light interception efficiency and the radiation use efficiency.

scholarly journals Introduction of Digitaria and Cynodon on the semiarid southern Coast of Puerto Rico

1969 ◽  
Vol 78 (3-4) ◽  
pp. 137-145
Author(s):  
Rafael Ramos Santana ◽  
José E. Rodríguez ◽  
Ismael Reyes ◽  
Alvaro Acosta
Keyword(s):  
Puerto Rico ◽  
Crude Protein ◽  
Dry Matter ◽  
The Other ◽  
Forage Grass ◽  
Dry Matter Yield ◽  
Southern Coast ◽  
Short Day ◽  
Harvest Intervals

Nine forage grass introductions (eight Digitaria and one Cynodon) were evaluated at 49-day harvest intervals under irrigation in the semiarid southern region of Puerto Rico. C. dactylon USDAPI 255455 (Coast Cross No. 1) produced the highest dry matter yield (DMY) throughout the seven cuts of each of the 2 years. However, no significant differences were observed between C. dactylon USDAPI 255455 and D. milanjiana 6416 and 6415 during each of the years in which the grasses were evaluated. In terms of the combined DMY of both years, C. dactylon 255455 was significantly superior to the rest of the introductions with the exception of D. milanjiana PRPI 6416. The in vitro organic matter digestibility (IVOMD) of C. dactylon 255455 was significantly less than that of both D. milanjiana 6416 and 6415. On the other hand, D. milanjiana presented the highest IVOMD on the cuts of the long and short day season. The crude protein (CP) content was very similar in most of the introductions under evaluation; however, D. milanjiana PRPI 6416 was the lowest in CP content during the short day season cut.

scholarly journals Artan Dozlarda Kurşun (Pb) Uygulamalarının Tütün Çeşitlerinin Büyüme, Pb ve Mikro Element Konsantrasyonlarına Olan Etkileri

2019 ◽  
Vol 7 (12) ◽  
pp. 2083
Author(s):  
Ahmet Kınay ◽  
Halil Erdem
Keyword(s):  
Contaminated Soils ◽  
Dry Matter ◽  
Nutrient Concentrations ◽  
Root Production ◽  
Genotypic Differences ◽  
Dry Matter Yield ◽  
Tobacco Products ◽  
Tobacco Plants ◽  
Lead Levels ◽  
Pb Concentration

Lead (Pb) is a hazardous heavy metal pollutant for humans, animals and plants when the certain threshold concentrations exceeded. Tobacco can accumulate higher concentrations of Pb, and the genotypic differences of tobacco in Pb uptake and the response to Pb have not been clearly determined. The aim of this work was to determine the effects of various lead levels (Pb 0, 0.25, 2.5 and 10 mg kg-1) on biomass (shoot and root) production, Pb concentration and micro nutrient concentrations of two tobacco (Xanthi/2A and Nail) varieties. Tobacco plants were grown under controlled conditions, and required macro (N, P and K) and micro (Fe and Zn) nutrients were applied along with increased doses of Pb. The concentrations of Pb, Zn, Fe, Mn and Cu concentrations in shoot and dry matter yield (shoot and root) of two tobacco varieties were determined. The increased doses of Pb significantly affected the dry matter yield. Despite the decrease in root and shoot, it was found that tobacco varieties caused significant increases in shoot lead concentrations. Increasing doses of lead to significant increases and decreases in green parts Zn, Fe, Mn and Cu concentrations of tobacco varieties. As a result, it is revealed that Nail and Xanthi / 2A tobacco varieties have a Pb concentration of less than 1.0 mg kg-1, even at the highest lead dose, but tobacco products made with tobacco varieties grown in lead contaminated soils constitute a risk for tobacco smokers.

Optimum harvest date of maize for biogas and silage purposes

2009 ◽  
Vol 57 (2) ◽  
pp. 119-125
Author(s):  
G. Hadi
Keyword(s):  
Dry Matter ◽  
Biogas Production ◽  
Weather Conditions ◽  
Vegetation Period ◽  
Dry Mass ◽  
Matter Content ◽  
Harvest Date ◽  
Dry Matter Content ◽  
Dry Matter Yield ◽  
Vegetative Organs

The dry matter and moisture contents of the aboveground vegetative organs and kernels of four maize hybrids were studied in Martonvásár at five harvest dates, with four replications per hybrid. The dry matter yield per hectare of the kernels and other plant organs were investigated in order to obtain data on the optimum date of harvest for the purposes of biogas and silage production.It was found that the dry mass of the aboveground vegetative organs, both individually and in total, did not increase after silking. During the last third of the ripening period, however, a significant reduction in the dry matter content was sometimes observed as a function of the length of the vegetation period. The data suggest that, with the exception of extreme weather conditions or an extremely long vegetation period, the maximum dry matter yield could be expected to range from 22–42%, depending on the vegetation period of the variety. The harvest date should be chosen to give a kernel moisture content of above 35% for biogas production and below 35% for silage production. In this phenophase most varieties mature when the stalks are still green, so it is unlikely that transport costs can be reduced by waiting for the vegetative mass to dry.

Nitrogen Fertilization of Basil

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 481a-481 ◽  
Author(s):  
M. Rangappa ◽  
H.L. Bhardwaj
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Calcium Nitrate ◽  
Control Treatment ◽  
Dry Matter Yield ◽  
Sweet Basil ◽  
Broad Leaf ◽  
Yield Difference ◽  
Optimum N Rate ◽  
N Rates

Sweet basil (Ocimum basilicum) is an important culinary herb in Virginia and other areas. The objective of this study, conducted during 1997, was to determine optimal N rate for fresh and dry matter yield. Seed of Broad Leaf sweet basil were direct-seeded on 18 June in rows 0.75 m apart in a RCBD design with 8 replications. Four N rates (0, 25, 50, and 75 kg N/ha) were used. Calcium nitrate (15.5% N) was used as the fertilizer source. All plants from 1-m row length from middle row of each plot were harvested by hand on 23 Sept. and fresh weights were recorded. The plant material was dried at 70°C for 48 h to record dry weights. The moisture content at harvest was calculated from fresh and dry weights. The fresh yields following 0, 25, 50, and 75 kg N/ha were 3.7, 5.4, 6.4, and 6.8 kg/m2, respectively. The yield difference between two highest N rates was not significant, however, both these rates had significantly higher yield than the two lowest rates. Similar results were also obtained for dry matter yields. The highest N rate of 75 kg N/ha resulted in significantly higher dry matter yield (1.3 kg/m2) as compared to the other three rates. The lowest dry matter yield was obtained after the control treatment (0.6 kg/m2). An opposite relationship between N rate and moisture content was observed when the highest moisture content resulted from control and 50 kg N/ha treatments. These results indicate that optimum N rate for sweet basil in Virginia is 50 to 75 kg/ha.

Effects of Seeding Rate on the Dry Matter Yield and Nutritive Value of Fall‐Grown Oat

cftm ◽  
2016 ◽  
Vol 2 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Wayne K. Coblentz ◽  
Jason S. Cavadini
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Dry Matter Yield ◽  
Seeding Rate
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