Moderate MAP rates improved apple and pear yield in low-P soils.

ammonium dihydrogen phosphate · yield · Malus domestica (apple)Results differ

4 papers in the same direction as this claim · 2 in the opposite direction

1. positive
   Moderate MAP increased three-year mean yield of Oregon Spur.

   Improved Performance of Bearing ‘Delicious’ Apple Trees with Nitrogen and Phosphate Fertilization in a Low-phosphorus Soil · 1986 · compared with the controls or in most of the N-only treated trees

   Same directionCited by this paper

2. no effect
   MAP did not increase tree growth or yield in any study year.

   The Effect of Preplant Monoammonium Phosphate Fertilizer and Compost on the Growth and Yield of 'Macoun' Apple Trees · 2005

   Opposite direction

3. negative
   MAP reduced yield 17% against no soil treatment.

   THIRD YEAR YIELD OF A HIGH DENSITY APPLE ORCHARD AS INFLUENCED BY TRAINING SYSTEM, IRRIGATION AND SOIL TREATMENT IN A REPLANTED, OLD ORCHARD SITE. · 1993 · compared with no soil treatment

   Opposite direction

4. positive
   The flowering and fruit-set effect occurred when P was applied at 36 or 48 g P/tree as granular monoammonium phosphate mixed with soil in the planting hole.

   Flowering of Apple Trees in the Second Year Is Increased by Firstyear P Fertilization · 1990

   Same direction

5. positive
   Three-year cumulative yield increased significantly in only three orchards.

   Planting-hole Amendments Modify Growth and Fruiting of Apples on Replant Sites · 1994

   Same direction

6. positive
   MAP increased fruit number.

   Response of ‘Jonagold’ Apple Trees in the First Three Years after Planting to Mono-Ammonium Phosphate Fertilization Under Replant Problem Conditions · 2005

   Same direction

ammonium dihydrogen phosphate · yield · Pyrus communis (pear)Positive and negative results

1 in the opposite direction

1. negative
   High MAP slightly reduced pear fruit size.

   Effect of fertilizers on soil pH and performance of apple and pear trees. II. Grown in different soils in the orchard · 1994

   Opposite directionCited by this paper

fertilization · yield · Pyrus communis (pear)Positive and negative results

31 papers in the same direction as this claim · 2 in the opposite direction · 2 reporting no difference from an alternative

1. no effect
   Potassium fertilization did not affect pear yield components or fruit yield.

   THE PEAR TREE RESPONSE TO PHOSPHORUS AND POTASSIUM FERTILIZATION · 2015

   Opposite direction

2. no effect
   The method of fertilization had no effect on pear yield quantity.

   Effect Of Fertilization Methods On Growth Of Pear Trees, Yielding And Fruit Quality · 2013

   Opposite direction

3. no effect
   FDS did not affect pear fruit yield relative to BSS.

   Effects of integrated nitrogen fertilization and irrigation systems, rootstocks, and cultivars on productivity, water and nitrogen consumption, and mineral nutrition of pear · 2012 · compared with broadcast of dry N fertilizer on soil surface and micro sprinkler irrigation system (BSS)

   No difference from an alternative

4. no effect
   Fruit yield was statistically similar between the integrated N fertigation and drip irrigation system and the broadcast N with microsprinkler system.

   (214) Adult Pear Response to Integrated Nitrogen Fertigation and Drip Irrigation System · 2006 · compared with broadcast application of dry N fertilizer and microsprinkler irrigation system

   No difference from an alternative

5. positive
   Bio-organic fertilizers promoted pear yield.

   Bio-Organic Fertilizer Promotes Pear Yield by Shaping the Rhizosphere Microbiome Composition and Functions · 2022

   Same direction

6. positive
   Bio-organic fertilizer (BF) and organic fertilizer (OF) increased pear fruit yield compared with chemical fertilizer (CF).

   WGCNA analysis revealing molecular mechanism that bio-organic fertilizer improves pear fruit quality by increasing sucrose accumulation and reducing citric acid metabolism · 2022 · compared with CF

   Same direction

7. positive
   Split fertigation slightly increased fruit yield.

   Pear Responses to Split Fertigation and Band Placement of Nitrogen and Phosphorus · 2009

   Same direction

8. positive
   Foliar compost produced the highest pear yield relative to soil compost and control.

   Yield and Fruit Quality of "Le-conte" Pear Trees as Affected by Compost Tea and Some Antioxidants Applications · 2014 · compared with soil compost application and control ones

   Same direction

27 papers more in this group