Effects of planting time and cultivar on dry matter yield and estimated total digestible nutrient content of forage rice in southwestern Japan

2008 ◽  
Vol 105 (1-2) ◽  
pp. 116-123 ◽  
Author(s):  
Hiroshi Nakano ◽  
Satoshi Morita ◽  
Ikuo Hattori ◽  
Kenji Sato
2003 ◽  
Vol 6 (5) ◽  
pp. 461-466 ◽  
Author(s):  
H.M. Awlad ◽  
M.A.H. Chowdhury ◽  
N.M. Talukder

2009 ◽  
Vol 12 (1) ◽  
pp. 124-127 ◽  
Author(s):  
Hiroshi Nakano ◽  
Satoshi Morita ◽  
Hisashi Kitagawa ◽  
Motoki Takahashi

2000 ◽  
Vol 80 (2) ◽  
pp. 337-344 ◽  
Author(s):  
P. R. Warman ◽  
J. M. Cooper

An experiment was conducted for 3 yr to compare the effects of fertilization of mixed forage with fresh and composted chicken manure and inorganic NPK. Fertility amendments were applied each year at three N levels and an unfertilized treatment was included. The experiment was conducted in two hay fields near Truro, Nova Scotia. Dry matter yield and forage N, P and K contents are reported for the 1992 and 1993 seasons. The nutrient content of the amendments as well as the efficiency of P and K use are discussed. Soil Mehlich 3-extractable P and K and KCl-extractable N were measured at two depths in September 1993. By the final year of the experiment, compost amendments produced yields as high as the recommended rate of NPK fertilization at both sites on both harvest dates. Medium rates of compost application also resulted in tissue N levels as high as or higher than the equivalent NPK treatments. The medium rate of manure application was equivalent in yield and tissue N to the compost treatments at the Acadia site, but had slightly lower yields and tissue N content at the Pugwash site. Compost P and K were relatively inefficiently used by the forage; this resulted in increased levels of Mehlich 3-extractable P and K in the 0- to 15-cm layer of the compost-amended plots. It was concluded that fertilization with compost or inorganic NPK, supplying equal amounts of N, can result in comparable yields and quality of forage. Key words: Chicken manure, compost, extractable NPK, forage, forage NPK, plant protein


2017 ◽  
pp. 162-167
Author(s):  
Klaus Bürcky ◽  
Thomas Hetterich ◽  
Johannes Heyn ◽  
Dietmar Horn ◽  
Dierk Koch

The yield of sugar beet has increased significantly in the last 20 years, as data on beet yields from Südzucker AG show. This led to the question of how the increased yield influenced the nutrient uptake of root and top. Therefore, beet and top were harvested in field trials set up to optimize the fertilization of sugar beet and, in addition to the yields, the concentrations of macronutrients and micronutrients in root and top were measured. A total of 114 environments were used for these studies and current data for nutrient uptake and nutrient export from sugar beet were determined. Root yields ranged from 65 to 115tha–1 and the top yields from 13 to 72tha–1. This corresponded to a dry matter yield of 14 to 26tha–1 for roots and to as little as 3.0 to 9.6tha–1 for tops. However, since the nutrient content in the roots was significantly lower than in the tops, less than 50% of the total uptake was found in the roots at harvesting time: N (49%), Mg (44%), K (36 %), Ca (34%), S (32%) and Na (12%). Among the macronutrients, it was only phosphorous which showed with 60% a higher amount of the nutrients in the roots than in the tops (about 40%). The results provide valuable information for a review and adaptation of current nutrient tables,the nutrient balance and, ultimately, fertilizer assessment.


1989 ◽  
Vol 69 (3) ◽  
pp. 461-472 ◽  
Author(s):  
C. A. GRANT ◽  
L. D. BAILEY

Flax (Linum usitatissimum L.) was grown in two growth chamber experiments on a total of 16 Black Chernozemic soils varying in content of Mg, Ca, P, and Zn. On three of the soils, dry matter yield of flax increased in response to application of P. Phosphorus availability was greater with broadcast than with banded fertilizer applications. Increased yield in response to Zn application was observed on one-half of the soils. Applications of P that increased P level in the tissue above 0.46% led to consistent but nonsignificant decreases in yield and reduced the level of Zn in the tissue. Zinc fertilization increased Zn and decreased P level in the tissue. Yield response to P application was not strongly related to soil chemical parameters measured, but increased as tissue P level decreased and tissue Zn level increased. High levels of soil Mg and soil pH and high tissue levels of Mg and P were the factors most closely associated with a yield response to Zn applied with P. Key words: Flax, Linum usitatissimum, Ca, Zn, P, Mg, fertilizer placement


2022 ◽  
Author(s):  
Alemu Tarekegn Tiruneh ◽  
Dessalegn Gelaye Amsalu ◽  
Kifetew Kesete Adane

Abstract Background Understanding the relationship between dry matter yield production and forage quality throughout the growing season will help to optimize the cutting intervals between harvests in different Alfalfa (Medicago sativa L.) varieties. An experiment was conducted to assess the effects of harvest frequency on forage yield and quality of 2 improved cultivars (ILRI-6984 and var. DzF-552) of alfalfa (Medicago sativa L.) in Western Dembia district over 20 months during 2017 and 2018. Four harvest frequencies (every 30, 40, 50 and 60 days) were compared in a randomized complete block design (RCBD) with 4 replications. The experiment was laid down in a randomized complete block design (RCBD) in factorial arrangement with four replications. To assess their production potential plant height (cm), number of branches per plant, fresh biomass yield (t ha−1) and dry matter yield (t ha−1) of the forge and its nutrient content were recorded. The data collected was subjected to analysis of variance (ANOVA) by using the general linear model (GLM) procedure in Statistical Analysis System (SAS) (2003) version 9.1. Results The results revealed that highest forage dry matter yield was recorded for variety ILRI-6984 harvested every 40 days (26.8 t DM ha−1) and for var. DzF-552 when harvested every 60 days (24.1 t DM ha−1) (P<0.001). While crude protein concentration tended to decline as age at harvest increased, there was little consistency in the pattern. Crude protein yields were also inconsistent across treatments but ILRI-6984 harvested every 40 days produced the highest yields (6.5 t ha−1) (P<0.001). Conclusion These preliminary findings need to be confirmed under field conditions on a large scale along with longer-term studies to examine the longevity of the stands at these harvest frequencies. Irregular harvesting based on stage of maturity should be compared with fixed inter-harvest intervals.


1963 ◽  
Vol 3 (9) ◽  
pp. 119 ◽  
Author(s):  
MJT Norman

At Katherine, N.T., changes in the above ground dry matter yield and nitrogen and phosphorus content of native pasture under a low open forest canopy were followed over three seasons, 1959-1962, by fortnightly sampling. Substantial increases in dry matter yield at the start of the season took place on4 when two or more inches of rain had fallen in the previous fortnight. Within four weeks of the cessation of rain at the end of the season, moderate to sharp falls in dry matter yield were recorded. Nitrogen and phosphorus contents remained in an approximately constant ratio of 14 : 1 throughout the sampling period. Both increased sharply during the first fortnight in which two or more inches of rain fell, declined rapidly in the next four to six weeks, and thereafter fell at a slow and steady rate. Maximum nitrogen and phosphorus yields were attained at the same time as, or shortly before, maximum dry matter yield was attained. Immediately after the attainment of maxima, there was a sharp fall in nitrogen and phosphorus yield. More detailed sampling at the end of the 1961 -62 season indicated that this was largely due to losses of nitrogen and phosphorus from the leaves.


Author(s):  
E. Ajay Kumar ◽  
K. Surekha ◽  
K. Bhanu Rekha ◽  
S. Harish Kumar Sharma

A field experiment was conducted during Kharif 2018 at College Farm, College of Agriculture, PJTSAU to evaluate the effect of various sources of zinc and iron on dry matter yield, nutrient content and nutrient uptake of finger millet. This experiment was conducted with randomized block design with 14 treatments and replicated thrice.The results revealed that application of different Zinc and iron sources at different rates significantly influenced the dry matter yield, nutrient content and nutrient uptake of finger millet. The highest dry matter production was reported with T10 - application of  RDF (60:40:30 kg N,P2O5 and K2O kg ha-1)+ foliar application of FeSO4 @ 0.5% twice at 30 and 60 DAS at all the stages followed by T14- (RDF+ foliar application of Fe-humate @ 0.25% twice at 30 and 60 DAS). Nutrient content decreased and Nutrient uptake (Nitrogen, phosphorous, potassium, iron and zinc) by the crop steadily increased with advancement in age of the crop upto harvest. The treatment receiving (T10) RDF+ foliar spray of FeSO4 @ 0.5% twice at 30 and 60 DAS recorded the highest nutrient content and (N, P, K & Fe) uptake by crop at 30DAS, 60 DAS and at harvest followed by (T14) RDF+ foliar application of Fe-humate @ 0.25% twice at 30 and 60 DAS. While, the Zinc content and uptake by crop at 30 DAS, 60 DAS and at harvest was highest with the treatment receiving (T8) -RDF + Zn-Humate foliar spray @ 0.25% twice at 30 and 60 days after sowing and was followed by treatment T7-RDF + Zn-Humate soil application @ 42 Kg ha-1.


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