Abstract
Silage corn (Zea mays L.) and wheat (Triticum aestivum L.) were grown (1987–1991) in trials that had been manured and fertilized since 1978 to evaluate the effects of annual N, P, K and Mg fertilizers and dairy cattle manure on yields and nutrient uptake. Manure as the main factor was applied at 0 and 20 Mg ha −1 on a wet-weight basis. The subplots consisted of six fertilizer treatments: NK, PK, NP, NPK, NPKMg and the unfertilized control. For silage corn, fertilizer rates were 150, 100, 150 and 40 kg ha −1 N, P 2 O 5 , K 2 O and Mg, respectively. Fertilizer rates for wheat were 80, 100, 120 and 40 kg ha −1 N, P 2 O 5 , K 2 O and Mg, respectively. In manured plots, reduced N rates were applied for silage corn (100 kg N ha −1 ) and wheat (50 kg N ha −1 ). Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited. A N-K synergistic effect on yields and nutrient uptake was observed both for silage corn and wheat. Application of K fertilizer significantly reduced silage corn Mg uptake without limiting yields, while it increased wheat yields and Mg uptake. Reduced N rates applied to silage corn and wheat achieved maximum yields and nutrient uptake in long-term manured treatments. Crop response to fertilizer application varied with crop species and was higher for silage corn than for wheat. Fertilizer adjustment is necessary after a long-term fertilizer or manure application. Key words: Silage corn, wheat, yields, nutrient uptake, manure, fertilizers, long-term, response to fertilizers
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Claims 20
Claim · model-written summary
Silage corn yields increased significantly with manure.
Not reportedComparator
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
Silage corn nutrient uptake increased significantly with manure.
Not reportedComparator
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
wheat yields increased significantly with manure.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- manuree0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
wheat nutrient uptake increased significantly with manure.
- Taxon
- wheatTriticum aestivume0
- Treatment
- manuree0
- Outcome
- nutrient uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
Silage corn yields increased significantly with N.
Not reportedComparator
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
Silage corn nutrient uptake increased significantly with N.
Not reportedComparator
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
wheat yields increased significantly with N.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Ne0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
wheat nutrient uptake increased significantly with N.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Ne0
- Outcome
- nutrient uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
Silage corn yields increased significantly with K.
Not reportedComparator
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
Silage corn nutrient uptake increased significantly with K.
Not reportedComparator
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
wheat yields increased significantly with K.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Ke0
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
wheat nutrient uptake increased significantly with K.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Ke0
- Outcome
- nutrient uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
P and Mg fertilizer effects on corn and wheat yield and nutrient uptake were limited.
Verbatim
e0“Silage corn and wheat yields and nutrient uptake were significantly increased by manure, N and K fertilizers whereas P and Mg effects were limited”
Claim · model-written summary
N and K had a synergistic effect on corn and wheat yields and nutrient uptake.
Verbatim
e0“A N-K synergistic effect on yields and nutrient uptake was observed both for silage corn and wheat”
Claim · model-written summary
K fertilizer significantly reduced corn Mg uptake without limiting yield.
Not reportedComparator
Verbatim
e0“Application of K fertilizer significantly reduced silage corn Mg uptake without limiting yields”
Claim · model-written summary
K fertilizer increased wheat yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- K fertilizere1
- Outcome
- yieldse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while it increased wheat yields and Mg uptake”
t0“Response of silage corn and wheat to dairy manure and fertilizers in long-term fertilized and manured trials”
e1“Application of K fertilizer significantly reduced silage corn Mg uptake without limiting yields”
Claim · model-written summary
K fertilizer increased wheat Mg uptake.
- Taxon
- wheatTriticum aestivume0
- Treatment
- K fertilizere1
- Outcome
- Mg uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while it increased wheat yields and Mg uptake”
t0“Response of silage corn and wheat to dairy manure and fertilizers in long-term fertilized and manured trials”
e1“Application of K fertilizer significantly reduced silage corn Mg uptake without limiting yields”
Claim · model-written summary
Reduced N rates in long-term manured treatments achieved maximum corn and wheat yields and nutrient uptake.
Verbatim
e0“Reduced N rates applied to silage corn and wheat achieved maximum yields and nutrient uptake in long-term manured treatments”
Claim · model-written summary
Crop response to fertilizer application was higher in silage corn than in wheat.
Verbatim
e0“Crop response to fertilizer application varied with crop species and was higher for silage corn than for wheat”
Claim · model-written summary
The authors recommend fertilizer adjustment after long-term fertilizer or manure use.
Verbatim
e0“Fertilizer adjustment is necessary after a long-term fertilizer or manure application”
t0“silage corn and wheat”
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