THE RESPONSE OF A GRASS-LEGUME SWARD TO POULTRY MANURE

1980 ◽  
Vol 60 (3) ◽  
pp. 451-459 ◽  
Author(s):  
D.G. MAYNARD ◽  
A.A. BOMKE

Poultry numbers, density and potential environmental quality problems have increased greatly in the Lower Fraser Valley. A field experiment was carried out in 1975 and 1976 to determine the effect of manure from a deep-pit laying house on the growth, yield and chemical composition of orchardgrass-ladino clover forage. The manure had N:P:K, ratios of 5.1:2.5:2.0 and 3.5:1.6:1.4 in 1975 and 1976, indicating that its K content relative to N and P was relatively low for forages. Manure rates were 1.25, 2.5, 5.0, 10, 20 and 40 t/ha. In 1976, these rates were applied as a single application in the early spring or split into three equal increments applied in the early spring and following the first and second cuts. The grass component of the sward responded positively to increased manure rates. However, at rates in excess of 2.5 t/ha, the clover was almost totally eliminated from the stand. The maximum 1975 dry matter yield of 7.00 t/ha occurred with 40 t/ha of manure although the rate of yield increase was greatest at rates of 10 t/ha or less. The maximum forage yield of 16.1 t/ha occurred in 1976 at the 20 t/ha split-application rate of manure. At the 5, 10 and 20 t/ha manure rates the split application produced yields about 1.2 t/ha higher than the single application method. Except for the last cuts in both years, manure significantly increased percent total Kjeldahl nitrogen, especially at rates of 20 t/ha or less. Forage NO3-N concentrations exceeded 0.20%, the level cited as being toxic to ruminants, at rates of 20 and 40 t/ha. Forage P concentrations were not significantly affected by manure addition, probably because the available P level in the soil was high. Forage K concentrations were increased at all cuts by increasing manure rates although K was not a factor in the crop response to manure because initial soil K was high. Manure applied at rates in excess of 20t/ha to supply adequate K for forage production would make inefficient use of the N and P in the manure. Good forage yields without damage to the sward and with little problem with high forage NO3 concentrations were obtained at the 10 t/ha rate; however, for manure disposal, rates as high as 20 t/ha could be used.

2004 ◽  
Vol 84 (4) ◽  
pp. 503-512 ◽  
Author(s):  
Bernard Gagnon, Michel C. Nolin ◽  
Athyna N. Cambouris

Application of combined de-inking paper sludge and poultry manure may be an appropriate way to dispose of these residues and restore fertility of highly degraded soils. An experiment was initiated to determine the effects of a single application of this material, using two different application techniques, on corn yield and soil properties of two 12-ha fields of contrasting textures located in the Nicolet watershed in the province of Québec, Canada. De-inking paper sludge was mixed with poultry manure (PP) at a ratio of 25:1 and strip-applied before corn seeding. The study included three treatments: untreated control, a constant application rate, and variable application rates according to initial soil organic C content. The variable application rates were 10, 20 and 30 Mg dry weight ha-1. The strips were randomized within blocks, and the strips ran lengthwise in the blocks. Soil N immobilization and P release occurred on both sites at least 2 mo after PP incorporation, as measured at the corn eight-leaf and silk apparition stages by the anion-exchange membranes. Despite early N immobilization, grain yield was not affected whereas plant P uptake was increased by PP. At both sites, a single application of PP increased soil pH and major nutrient levels at harvest but had no significant effect on soil organic C. The application of PP also increased P saturation indices but the measured values were well below critical thresholds above which environmental risks would be high. The variable application rate treatment did not differ from the equivalent constant rate treatment for improving soil status and crop growth. This study indicates that mixing de-inking paper sludge and poultry manure may provide a cost-effective and environmentally friendly approach to land disposal of these wastes. Key words: Corn, paper sludge, poultry manure, precision farming, soil nutrients


1983 ◽  
Vol 63 (4) ◽  
pp. 719-725 ◽  
Author(s):  
A. A. BOMKE ◽  
R. A. BERTRAND

Urea and ammonium nitrate were applied at rates of 75, 150 and 300 kg N/ha as either a single application in April or split into three equal increments, one applied in April and the second and third following cuts one and two. The orchardgrass-perennial ryegrass sward responded significantly to applied N in each year; however, the yield produced by the two sources differed in only one of the three years. In that year split applied ammonium nitrate gave 8% higher yields than similarly applied urea. The sources were found to be equivalent when applied in the spring. Split application of the N rates increased total annual dry matter yields in one of the three years regardless of N source. In all three years split application of N shifted forage production from cut one to cuts two and three. Key words: N uptake, split N application, orchardgrass-perennial ryegrass sward


2000 ◽  
Vol 80 (2) ◽  
pp. 319-326 ◽  
Author(s):  
R. Gordon ◽  
G. Patterson ◽  
T. Harz ◽  
V. Rodd ◽  
J. MacLeod

Experiments were conducted to evaluate the effects of performing soil aeration either before or after spreading liquid manure in forage production systems. The experiments included eight trials performed in 1996 using a non-interfering diffusion method to determine ammonia (NH3) flux emissions from both aerated and control plots. For all eight trials, the manure application rate was 75 355 L ha−1. The average NH3 loss for the aerated treatment was 67.3 kg ha−1 while the loss for the control plots was 63.0 kg ha−1. Although differences in the NH3 loss between treatments were low, substantial variations were observed between individual trials depending on the prevailing meteorological conditions.To further evaluate the effects of soil aeration, 11 trials were carried out on Nova Scotia dairy farms in 1996 and 1997 to identify yield effects. Manure application rates ranged from 18 000 to 64 000 L ha−1. The average forage yield on aerated treatments was 9.4% below control treatments (i.e., manure without aeration). Of the 11 trials, 9 resulted in significantly (P < 0.05) reduced yield with soil aeration. Key words: Liquid manure, ammonia volatilisation, soil aeration


2019 ◽  
Vol 72 (3) ◽  
Author(s):  
Behailu Mekonnen ◽  
Weyessa Garedew

Soil fertility decline is one of the factors that result in low productivity of turmeric (<em>Curcuma longa</em>, Zingiberaceae Lindl.,) in Ethiopia. An experiment was conducted to determine the effects of N rate and time of application on growth, yield, and quality of turmeric crops in Ethiopia. The trial consisted of five N rates: 0, 46, 69, 92, 115 kg ha<sup>−1</sup>, and five split application times: full dose at emergence, two times (1/2), three times (1/3), four times (1/4), and five times (1/5) equally split applications, arranged in a split plot design with three replications. Plant heights, tiller number per plant, pseudo-stem girth, mother and finger rhizome numbers and weights, fresh rhizome yield, oleoresin and essential oil contents – all were significantly affected by the interaction effects of N rate and time of application. The three times split application of 115 kg N ha<sup>−1</sup> produced higher values of these crop characteristics. This application rate also produced a better yield and quality than did two times of application, the most commonly used practice. Therefore, turmeric producers in southwestern Ethiopia should apply 115 kg N ha<sup>−1</sup> in three equally split applications to improve turmeric yield and quality.


1988 ◽  
Vol 60 (2) ◽  
pp. 135-152
Author(s):  
Aino-Maija Evers

The effects of different fertilization practices on the carrot root and shoot dry weights, yield, dry matter contents and root/shoot ratio were studied in field experiments. Unirrigated and irrigated placement and broadcast fertilization, fertirrigations without basic fertilization, fertirrigations with basic fertilization, and PK placement with N fertirrigations were compared. In addition, split application was compared to single application of nutrients. The soil nutrient levels were studied by soil analysis. The carrot root and shoot samples were collected three times during the growing period. Cv. Nantes Duke Notabene 370 was grown. The carrot shoots reached their maximum weight already by three months, whereas roots grew slowly during the first two months but grew considerably during both the third and fourth month. The root and shoot dry weights were positively correlated at all sampling dates in both years ( r ≥0.77***), The big photosynthetizing apparatus caused the production of high root yield. The placement fertilization of granular NPK fertilizer increased the yield as compared to broadcast of granular NPK fertilizer (p = 0.009**). The yield was also increased by the placement of P and K as compared to treatments without placement fertilization of P and K (p = 0.03*). There was no difference in yields between single application and split application. Irrigation decreased the yield in 1985 (p = 0.03*). In 1986the yield was significantly higher than in 1985 (p = 0.000***). At harvest the fertilization did not affect the dry matter content of carrot roots when compared with unfertilized treatments. The difference in dry matter content was greater between years (p = 0.000***) than between fertilization practices (p = 0.05*). The treatment PK placement with N fertirrigations yielded carrots with a higher dry matter content than did the NPK fertirrigations treatments. Besides the fertilization experiment samples from two organically cultivated fields were collected to obtain data concerning organically cultivated carrots and soils.


2017 ◽  
Vol 4 (1) ◽  
pp. 46-49
Author(s):  
Tekleyohannes Berhanu ◽  
Mergia Abera

Aim. To study the adaptation of vetch species and the level of their forage yield in the highlands of the region. Methods. Field and laboratory methods, statistical analysis. Results. The study was conducted in Bulle and Chencha districts of Southern region of Ethiopia with the objective to identify adaptable and high forage yield- ing vetch species for the high lands of the region. Five vetch species (Vicia sativa L., V. dasycarpa Ten., V. atropurpurea Desf., V. villosa Roth. and V. benghalensis L.) were tested at both locations for two years. The result showed that there was signifi cant variation in dry matter yield of the tested species in the two locations. Vetches planted at Bulle performed well when compared with Chencha area with mean DM yield of 5.3 and 1.2 t/ha, respectively. Among the vetch species, Vicia sativa, Vicia villosa, Vicia dasycarpa, and Vicia bengalensis adapted well at Bulle and produced on average 4 to 7 t/ha forage DM. In Chencha area, V. dasycarpa and V. villosa were the best performing species with forage DM yield of 1.6-1.8 t/ha. Conclusions. The vetch species tested in the current study could be used for conventional pasture and forage production, in livestock exclu- sion areas, in forage strips, as an under-sowing with food crops, or as a backyard forage crop in the southern highlands of Ethiopia.


2016 ◽  
Vol 67 (9) ◽  
pp. 1000 ◽  
Author(s):  
Marco Mariotti ◽  
Alessandro Masoni ◽  
Iduna Arduini

With the view to extending the cultivation of common buckwheat to Mediterranean environments, we investigated the responses of two varieties to three sowing times, early spring, late spring and late summer, in rainfed and irrigated conditions. Plants were harvested at two ripening stages for forage production and at maturity for grain yield. The crop cycle lasted 82–88 days independent of sowing time, whereas the thermal time was ~1000 degree-days in early spring and late summer sowings, and 1200 degree-days when sown in late spring. Forage yield increased up to 75% between ripening stages. Early spring was the best sowing time for forage (4 t ha–1 dry weight) and grain yield (2 t ha–1 dry weight) in rainfed conditions. Late spring sowings give the highest forage yield when irrigated (6 t ha–1 dry weight), but were not suitable for producing grain, for the adverse effect of high summer temperatures on seed set and seed filling. Late summer sowings produced acceptable grain yield (1.5 t ha–1 dry weight), whereas short days and low temperatures limited forage production. Thus, in Mediterranean environments, buckwheat could be profitably introduced as a minor summer crop, sown in early spring for grain production and in late spring for forage production.


Author(s):  
L. A. Babatola ◽  
C. J. Uche

The production of pepper is low due to decrease in fertility of soil and inadequate storage structures. The study was aimed at evaluating the growth, yield and storage qualities of selected pepper varieties as influenced by poultry manure and storage structures in Ibadan, Nigeria. A field experiment was carried out at Department of Agronomy, University of Ibadan between November, 2017 and April, 2018 growing season. Two varieties of pepper (Capsicum annum and Capsicum frutescens) were used, with four treatments consisting of different rates of poultry manure. Controls of 0 g of poultry manure (T1), 12.5 g (T2), 25 g (T3) and 37.5 g (T4) were laid out in a complete randomised design and replicated four times. Storage experiment was carried out in the Department and at Nigeria Stored Products Research Institute (NSPRI), Ibadan in June, 2018. The storage experiment comprised of four treatments with ambient condition (open shelf), wet basket, Evaporative Coolant Structure (ECS/Pot-in-pot), and plastic crates used as storage structures, laid out in a completely randomised design and replicated three times. The physical parameters obtained in days in storage (DIS) included weight loss (%), firmness, freshness, among others. Data observed were subjected to analysis of variance (ANOVA) and means separated using least significant difference (LSD) at p>0.05. The result obtained showed that pepper growth was enhanced using Capsicum frutescens under 25 g poultry manure application rate which resulted to superior pepper yield. The combination of pot-in-pot with sawdust as storage structures enhanced the storage qualities of pepper fruits within the two weeks of storage. Although, the different manure treatments had no significant effect on the postharvest quality of pepper, the ECS can be effectively used in the storage of pepper fruits in order to improve postharvest quality, extend shelf life and enhance affordability of the commodity at all seasons.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Matthias Suter ◽  
Olivier Huguenin-Elie ◽  
Andreas Lüscher

AbstractAssessing the overall performance of ecosystems requires a quantitative evaluation of multifunctionality. We investigated plant species diversity effects on individual functions and overall multifunctionality in a grassland experiment with sown monocultures and mixtures comprising four key grass and legume species. Nitrogen fertilisation rates were 50, 150, and 450 kg N ha−1 yr−1 (N50, N150, N450). Ten functions were measured representing forage production, N cycling, and forage quality, all being related to either productivity or environmental footprint. Multifunctionality was analysed by a novel approach using the mean log response ratio across functions. Over three experimental years, mixture effects benefited all forage production and N cycling functions, while sustaining high forage quality. Thus, mixture effects did not provoke any trade-off among the analysed functions. High N fertilisation rates generally diminished mixture benefits. Multifunctionality of four-species mixtures was considerably enhanced, and mixture overall performance was up to 1.9 (N50), 1.8 (N150), and 1.6 times (N450) higher than in averaged monocultures. Multifunctionality of four-species mixtures at N50 was at least as high as in grass monocultures at N450. Sown grass–legume mixtures combining few complementary species at low to moderate N fertilisation sustain high multifunctionality and are a ‘ready-to-use’ option for the sustainable intensification of agriculture.


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