Harvest Timing and Byproduct Addition Effects on Corn and Forage Sorghum Silage Grown Under Water Stress PDF Download

Author: Mark A. Marsalis
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 16

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Author: Ignacio A. Ciampitti
Publisher: John Wiley & Sons
ISBN: 0891186271
Category : Technology & Engineering
Languages : en
Pages : 528

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Book Description
Sorghum is among the top five cereals and one of the key crops in global food security efforts. Sorghum is a resilient crop under high-stress environments, ensuring productivity and access to food when other crops fail. Scientists see the potential of sorghum as a main staple food in a future challenged by climate change. The contributors provide a comprehensive review of sorghum knowledge. The discussion covers genetic improvements, development of new hybrids, biotechnology, and physiological modifications. Production topics include water and nutrient management, rotations, and pest control. Final end uses, sorghum as a bioenergy crop, markets, and the future of sorghum are presented. IN PRESS! This book is being published according to the “Just Published” model, with more chapters to be published online as they are completed.

Author: Jason Waite
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The Ogallala Aquifer is a large underground water source located under the High Plains and is used as the primary irrigation source for producers in the region. Hyper-extraction of the Ogallala is causing a reduction in irrigation capacity for a large part of the region. Confined animal feeding operations in western Kansas rely upon irrigated crops, mainly corn [Zea mays (L.)] as a source of feed. Research has shown that forage sorghum [Sorghum bicolor (L.) Monech] could meet the demands of the confined animal feeding operations while using less water than corn. An experiment was designed to evaluate corn and forage sorghum in Western Kansas. The objective of this research was to evaluate the water use and growth characteristics of irrigated and dryland corn and forage sorghum. Field experiments were conducted at two locations (Tribune Experiment Station, Tribune and a cooperator's field near Hoxie, Sheridan County Kansas) in 2011-2013. The experimental design at Tribune was a randomized complete block with four replications. A traditional replicated design was not possible at Hoxie. Multiple subsamples per plot were obtained and data are reported as means with standard errors. Corn and forage sorghum were grown under both dryland and fully irrigated conditions at both locations. Neutron access tubes were installed to monitor soil water. Aboveground biomass, intercepted solar radiation and volumetric soil water content were recorded at 5 sampling dates each growing season. Water use was similar between irrigated corn and forage sorghum. There were differences in biomass from year to year between the irrigated crops. Dryland water use was similar between the two crops and also had differences in biomass from year to year. Yields were significantly lower than average for all crops in 2012 due to drought conditions. Solar radiation interception correlated with aboveground biomass measurements. Aboveground biomass from the forage sorghum and corn was ensiled both years and analyzed for nutrient composition. This research suggests that forage sorghum silage may be an acceptable replacement for corn silage in areas with reduced irrigation capacities.

Author: Gerardo Van den Hoek
Publisher:
ISBN: 9781339543635
Category :
Languages : en
Pages :

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Corn (Zea mays) is the dominant silage crop for irrigated dairy regions. Sorghum's (Sorghum bicolor) drought tolerance shows potential to be grown for silage under conditions of water shortages. A two year experiment was conducted in Five Points, CA to determine the yield and nutritive quality of forage corn (CORN), conventional sorghum (CONV) and brown midrib sorghum (BMR) at 100%, 80% and 60% of full irrigation (ETc) under a center-pivot irrigation system. Yields were measured and forage quality was determined using % Neutral Detergent Fiber (NDF), % NDF digested in 30 hours (NDFD30), % Crude Protein (CP), and % starch as quality parameters. Results in 2014 had a high degree of variability leading to no significances in yields. In 2015, CORN yield's reduced 57% more than BMR per unit of water, whilst CONV and BMR maintained yields from the 100 to 80% levels. The decline in NDFD30 with additional water was significantly larger in CONV than in CORN and in BMR. BMR had NDFD30 values up to 10% higher than those of CORN. CORN % starch decreased significantly with a 20% decrease in water application. Sorghum had a negligible amount of starch at all levels. CP decreased uniformly across all three types of forages with increased irrigation. We can conclude, therefore, that during water shortages, sorghum can provide high-yielding (>15 Mg/ha), digestible (>60% NDFD30) silage for use in dairy rations. However, sorghum must be supplemented with grain to compensate for the low starch.

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 732

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Author: Colton Ace Robison
Publisher:
ISBN:
Category : Cattle
Languages : en
Pages : 132

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Book Description
The impetus for sorghum (Sorghum bicolor L.) silage to replace corn silage in beef cattle and dairy rations has increased due to sorghum's ability to grow well under water-limited conditions. Two experiments were conducted to evaluate the effects of maturity, mechanical processing, ensiling duration, and hybrid on in situ ruminal digestibility. In Exp. 1, three ruminally cannulated beef steers (BW = 463 ± 15 kg) were used to evaluate the effect of maturity stage, mechanical processing, and ensiling duration on in situ digestibility of forage sorghum silage. A brown midrib (BMR) forage sorghum (Alta Seed AF7401) was harvested at soft dough (SD) and hard dough (HD). Within each maturity stage, sorghum kernels were processed (C) using a chipper shredder or left unprocessed (W), and were subjected to 0, 30, 60, or 120 d of ensiling. In Exp. 2, three ruminally cannulated steers (BW = 570 ± 17.9 kg) were used to evaluate sorghum hybrids and ensiling duration on in situ silage digestibility. A BMR forage sorghum (Alta Seed AF7401), conventional forage sorghum (Sorghum Partners NK300), and a grain sorghum (Sorghum Partners SP33S40) were ensiled for 0 or 60 d, which was the optimal ensiling duration for Exp. 1. In Exp. 1, kernel processing increased (P

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1922

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Book Description

Author: Lloyd B. Sherrod
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 28

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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 40

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Book Description

Author: D. G. Cummins
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 12

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Book Description
Both corn and sorghum yields were increased by irrigation, but corn yields were 36% (ranged from 10 to 81%) higher when irrigaterd, compared to 24% (ranged from 10 to 53%) for sorghum. Apparent differences in ear or head, leaf, stalk, and in vitro dry matter digestibility (IVDMD) levels due to irrigation were somewhat small in both corn and sorghum. Dry forage yields increased with maturity in both corn and sorghum. In some cases irrigation hastened the time of maximum dry matter yields in corn but not in sorghum. There was a little evidence in both corn and sorghum that irrigation will maintain IVDMD at higher levels than monirrigated corn and sorghum later in maturity. Irrigation increased apparent forage yields for corn and sorghum most when drought occurred during midseason. Yield increase was slightly less when water was applied during early season drought, and least during late season drought. As was shown in the overall irrigation response, sorghum did not respond as much as corn did to irrigation during the various drought periods.