Resource addition through irrigation and fertilization (Polemoniaceae)

Knowledge graph centered on Resource addition through irrigation and fertilization (Polemoniaceae) with 47 nodes and 141 connections. Top connected: Hummingbird, Bombus, Ipomopsis, Ligusticum porteri, I. aggregata.

Method synopsis

Factorial resource treatments including water addition (400ml, 4x weekly) and water plus NPK fertilization (20-20-20 at 4ml/L weekly) delivered via drip irrigation to test resource limitation effects on plant compensation.

Synthesized from method descriptions across 1 paper using this protocol.

Procedure from a recent peer-reviewed implementation

Steps below were extracted from the most recent peer-reviewed implementation of this protocol in the corpus — When resources don't rescue: flowering phenology and species interactions affect compensation to herbivory in <i>Ipomopsis aggregata</i> (2012), Oikos. Implementations in other papers (listed below) may differ.

1. Resource addition treatments
   For water addition treatment, delivered 400 ml of water four times per week to the root zone using drip irrigation. For water plus fertilizer treatment, plants received same water amount plus fertilizer once per week using 20-20-20 NPK fertilizer at dosage of 4 ml l-1 as recommended by manufacturer. Drip irrigators were placed around ambient plants but these plants were not watered or fertilized.
   Quantities: 400 ml water 4 times per week, 20-20-20 NPK fertilizer at 4 ml l-1 once per weekDuration: Weekly treatments throughout growing seasonConditions: Fertilizer was delivered to root zone of each plant
   Equipment: drip irrigation system, drip irrigators, 20-20-20 NPK fertilizer

Typical Equipment

• drip irrigation system
• 20-20-20 NPK fertilizer

Output Measurements

• resource treatment status
• plant growth and reproduction responses

Papers Using This Protocol (1)

Species Studied With This Protocol