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R. A. Straw and C. A. Mullins

Tomato trials with black plastic mulch, drip irrigation, and fertigation were conducted on a Lily sandy loam soil of medium fertility at Crossville, TN in 1990 and 1991. 'Mountain Pride' tomatoes were fertilized with a broadcast preplant application of 1120 kg ha–1 of 10-4.4-8.3 fertilizer with and without combinations of black plastic mulch and weekly applications of 0.64 cm of water for 12 weeks through drip irrigation. Three black plastic mulch and drip irrigation treatments supplied additional nitrogen and potassium fertilizer through the drip irrigation system. Yields were increased by use of black plastic mulch and by trickle irrigation in 1991. However, additions of fertilizer through drip irrigation had no effect on yields.

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Lenny Wells

documented the planting of 391,488 pecan trees and 15,328 additional pecan acres since 2010. The majority of these new pecan plantings are equipped with microsprinkler or drip irrigation systems equipped for fertigation ( Wells, 2014 ). Cultural practices

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Patrick Conner

nursery productivity. Nitrogen (N) in particular is relatively inexpensive and greatly stimulates growth in red oak ( Quercus rubra ) and red maple ( Acer rubrum ) seedlings ( Larimer and Struve, 2002 ). Nitrogen fertigation resulted in a twofold height

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Ana Morales-Sillero, R. Jiménez, J.E. Fernández, A. Troncoso and G. Beltrán

were made on ‘Carolea’ olive trees ( Inglese et al., 2002 ). It has been observed that an excess of fertilizer applied by fertigation decreased fruit quality in other fruit tree species. In particular, high N doses caused thicker peels in orange

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Yang Gao and Deying Li

demand of plants. Wind can affect uniformity of foliar application. Foliar fertigation, fertilization through the irrigation system, was found as effective as soil application on bermudagrass ( Cynodon dactylon × C. transvaalensis ) ( Snyder and Burt

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Yuqi Li and Neil S. Mattson

commercial substrates with two water sources (fertigation and clear water irrigation). Materials and methods Plant material and experimental design. The plant materials used in this experiment were 4-week-old seedlings of ‘Bravo White’ petunia. The plants

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Miguel Urrestarazu, Isidro Morales, Tommaso La Malfa, Ruben Checa, Anderson F. Wamser and Juan E. Álvaro

fertigation methods for the automation of fertigation systems in soilless cultures (e.g., Cáceres et al., 2007 ; Rodríguez et al., 2015 ; Steidle et al., 2014 ). Fertigation methods and their automation are based on the following: 1) the fertigation

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P.R. Johnstone, T.K. Hartz and D.M. May

) reported significant suppression of lettuce tipburn by soil application of Ca in only one of six field trials, and multiple foliar Ca applications had no effect in any trial. Hartz et al. (2007) found that Ca fertigation did not increase tissue Ca levels

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Juan Carlos Melgar, Arnold W. Schumann and James P. Syvertsen

frequency of applications of fertilizer in solution (fertigation) may enhance nutrient use efficiency and tree productivity while minimizing NO 3 leaching losses ( Alva and Paramasivam, 1998 ; Syvertsen and Smith, 1996 ). Good N management has been

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Warren C. Stiles, Terence L. Robinson and W. Shaw Reid

Experiments conducted since 1986 indicate that multi-nutrient fertigation may be effective in improving early growth and yield of new orchards. However, the early studies did not provide information concerning the contributions of individual nutrient elements to these responses. Experiments were established in 1993 and 1994 to compare effectiveness of alternative sources, rates, and methods of applying K, Zn, and Cu through drip irrigation compared with annual soil surface applications to `McIntosh'/M.9 and `Empire'/M.9 trees. After 3 years, leaf K, cumulative shoot growth, and first crop year yields were increased by application of K. Differences between sources, rates, times, or methods of application generally were not significant when relatively high rates were applied. However, early results from a rate study indicate a significant K source by rate interaction. Soil surface application of K plus drip irrigation appears to be comparable to fertigation in supplying this element. After 2 years, applying EDTA chelates of Zn and Cu through fertigation increased leaf Zn and Cu, respectively, but high rates required are considered to be uneconomical when compared with foliar sprays of these elements.